Maryland Science Center
Light Street and Key Highway at the Inner Harbor, Baltimore. 10 a.m.-5 p.m. Monday-Friday, 10 a.m.-6 p.m. Saturday, 11 a.m.-5 p.m. Sunday. Closed holidays. Imax theater and exhibits, $9.50-$19.50. 410/685-5225.
Imax: "Dinosaurs Alive," "Hurricane on the Bayou," "Whales." Call for show times.
Planetarium shows: "The Sky Live" "Live From the Sun," "Beyond the Nine" and "The Sky Above Mister Rogers' Neighborhood." Call for times.
11407 Constitution Highway, Montpelier Station, Va. 9:30 a.m.-5:30 p.m. daily except holidays. 540/672-2728.
"Discovering Madison." Video, audio tour and more about James Madison's life. Continues indefinitely.
National Academy of Sciences
Keck Center, 500 Fifth St. NW. Viewable by appointment. Free. 202/334-2436.
"Monkey Portraits" by Jill Greenberg. Through Nov. 25.
National Air and Space Museum
Independence Avenue and Sixth Street SW. 10 a.m.-5:30 p.m. daily. Metro: L'Enfant Plaza. 202/633-1000. Imax theater schedule: 202/357-1686.
"Treasures of American History." A collection of more than 150 objects from the National Museum of American History. Through summer 2008.
Lockheed Martin Imax shows: "Adrenaline Rush," "Space Station 3D," "To Fly," "Fighter Pilot." $6.50-$8.50.
Einstein Planetarium shows: "Cosmic Collisions, "Infinity Express," "The Stars Tonight Open Your Eyes to the Skies." Call for show times. $5.50-$8.
Pennsylvania Avenue between Seventh and Ninth streets NW. 10 a.m.-9 p.m. daily except holidays. Metro: Archives-Navy Memorial. 202/357-5000.
"School House to White House: The Education of the Presidents." Through Jan. 1.
"Public Vaults." Ongoing exhibit.
National Building Museum
401 F St. NW. 10 a.m.-5 p.m. Monday-Saturday, 11 a.m.-5 p.m. Sunday. Metro: Judiciary Square. 202/272-2448.
"Reinventing the Globe: A Shakespearean Theater for the 21st Century." Through Aug. 27.
"David Macaulay: The Art of Drawing Architecture." Through Jan. 21.
National Firearms Museum
11250 Waples Mill Road, Fairfax. 703/267-1600. 10 a.m.-4 p.m. daily.
The largest firearms collection in the country includes rare weapons and firearms of famous people.
National Gallery of Art
Fourth Street and Constitution Avenue NW. 10 a.m.-5 p.m. Monday-Saturday, 11 a.m.-6 p.m. Sunday. Closed Christmas and New Year's Day. Metro: Judiciary Square or Archives-Navy Memorial. 202/737-4215.
"Eugene Boudin at the National Gallery of Art." Through Sept. 3.
"Foto: Modernity in Central Europe, 1918-1945." Through Sept. 3.
"Fabulous Journeys and Faraway Places: Travels on Paper 1450-1700." Through Sept. 16.
"Private Treasures: Four Centuries of European Master Drawings." Through Sept. 16.
"Desiderio da Settignano: Sculptor of Renaissance Florence." Through Oct. 8.
"13 Drawings by Roy Lichtenstein." Permanent display.
National Gallery Sculpture Garden. Garden of canopy trees, flowering trees, shrubs, ground cover and perennials contains the works of Alexander Archipenko, Joan Miro, Isamu Noguchi and more. Open all year.
National Geographic Society
17th and M streets NW. Metro: Farragut North. Explorers Hall open 9 a.m.-5 p.m. Monday-Saturday, 10 a.m.-5 p.m. Sunday. 202/857-7588.
"Photo Camp 2006: Uganda." Through Sept. 3.
"Zakouma, Elephant Crisis in Chad." Through Sept. 30.
National Guard Memorial Museum
1 Massachusetts Ave. NW. 10 a.m.-4 p.m. Monday-Friday. Free. 202/789-0031.
The nation's only museum devoted to the National Guard.
National Museum of American History
14th Street and Constitution Avenue NW. 10 a.m.-5:30 p.m. daily. 202/633-1000.
"Treasures of American History." A collection of more than 150 objects from the National Museum of American History will be on display at the National Air and Space Museum. Through summer 2008.
Closed for renovations. Scheduled to reopen by summer 2008.
National Museum of African Art
950 Independence Ave. SW. 10 a.m. to 5:30 p.m. daily. 202/633-4600.
"Inscribing Meaning: Writing and Graphic Systems in African Art." Through Aug. 26.
"African Vision: The Walt Disney-Tishman African Art Collection." Through Sept. 7, 2008.
National Museum of the American Indian
Fourth Street and Independence Avenue SW. Open daily 10 a.m.-5:30 p.m. 202/633-1000.
"Identity by Design: Tradition, Change and Celebration in Native Women's Dress." Through Jan. 2.
National Museum of Civil War Medicine
48 E. Patrick St., Frederick. 10 a.m.-5 p.m. Monday-Saturday, 11 a.m.-5 p.m. Sunday. $4.50-$6.50. 301/695-1864.
Exhibits focusing on all aspects of Civil War medicine: the story of care, healing and devotion during the conflict.
"The Art of Embalming the Dead During the American Civil War." Permanent exhibit.
National Museum of Health and Medicine
Walter Reed Army Medical Center, 6900 Georgia Ave. NW. 202/782-2200. 10 a.m.-5:30 p.m. daily.
"Human Body, Human Being." Medical artifacts and anatomy displays on the body and illness. Runs indefinitely.
"To Bind Up the Nation's Wounds." Civil War medicine as told through artifacts, photographs, illustrations, tools, specimens and first-person accounts. On permanent display.
National Museum of the Marine Corps
18900 Jefferson Davis Highway, Triangle, Va. 9 a.m.-5 p.m. daily, except Christmas. 800/397-7585.
Museum dedicated to the legacy of the U.S. Marine Corps.
"The U.S. Marine Band The President's Own." Through November.
National Museum of Natural History
10th Street and Constitution Avenue NW. 10 a.m.-5:30 p.m. Metro: Federal Triangle. 202/633-1000.
"Entombed in Amber: Time Capsule and Treasured Jewel." Biologist Jorge Santiago-Blay discusses the precious substance in a family event. Evans Gallery 1-2 p.m., Baird Auditorium 2:30-3:30 p.m. Aug. 18. Free.
"Emissaries of Peace: The 1762 Cherokee and British Delegations." Through Nov. 25.
The Kenneth E. Behring Family Hall of Mammals. Permanent display.
Korea Gallery. Permanent display.
Johnson Imax Theater: "Sharks 3D," "Lions 3D: Roar of the Kalahari," "Night at the Museum." $6.50-$8.50.
Imax Jazz Cafe. 5:30-10 p.m. Friday.
National Museum of Women in the Arts
1250 New York Ave. NW. 10 a.m.-5 p.m. Monday-Saturday, noon-5 p.m. Sunday. $3-$5. 202/783-5000.
"Frida Kahlo: Public Image, Private Life. A Selection of Photographs and Letters." Through Oct. 14.
Navy Memorial and Naval Heritage Center
Pennsylvania Avenue NW between Seventh and Ninth streets. 9:30 a.m. to 5 p.m. Monday-Saturday. Closed Sundays and holidays. Metro: Archives-Navy Memorial. 202/737-2300.
Free screenings of the film "At Sea" at various times during the week.
"Sea-Air-Land: The Navy's Special Operations Sailors." Through April 2008.
Building 76, Washington Navy Yard, Ninth and M streets SE. 9 a.m.-4 p.m. Monday-Friday, 10 a.m.-5 p.m. Saturday and Sunday. Metro: Navy Yard. 202/433-4882.
"In Harm's Way: The U.S. Navy in World War II." Runs indefinitely.
"Korea 1950-1953: The Navy in the Forgotten War." Runs indefinitely.
National Portrait Gallery
Eighth and F streets NW. 202/633-1000.
"Great Britons: Treasures from the National Portrait Gallery, London." Through Sept. 3.
"Harry Benson: Being There." Through Sept. 3.
"Portraits of Sandra Day O'Connor." Through Oct. 8.
"Portraiture Now: Framing Memory." Through Jan. 6.
National Postal Museum
2 Massachusetts Ave. NE. 10 a.m.-5:30 p.m. daily except Christmas. Metro: Union Station. 202/633-1000.
"Moving the Mail." On permanent display.
The museum of the American Architectural Foundation. 1799 New York Ave. NW. 10 a.m.-4 p.m. Tuesday-Sunday except holidays. $5, $3 seniors and students. 202/638-3221.
William Paca House and Garden
186 Prince George St., Annapolis. 10 a.m.-4 p.m. Monday-Saturday, noon-4 p.m. Sunday. Closed holidays. $5 house, $2 garden. 410/263-5553.
1600 21st St. NW. 10 a.m.-5 p.m. Tuesday-Saturday, 10 a.m.-8:30 p.m. Thursday, 11 a.m.-6 p.m. Sunday. Closed Monday and holidays. Admission for permanent collection is free on weekdays. Admission is charged on weekends. Exhibits are $10-$12. Free for Phillips Collection members and visitors under 18. 202/387-2151.
"American Impressionism: Paintings From the Phillips Collection." Through Sept. 16.
Permanent collection of 19th- and 20th-century European and American paintings.
Pope John Paul II Cultural Center
3900 Harewood Road NE. 10 a.m.-5 p.m. Tuesday-Saturday, noon-5 p.m. Sunday. Admission free. Donation requested. 202/635-5400.
The Dennis and Phillip Ratner Museum
10001 Old Georgetown Road, Bethesda. Noon-4 p.m. Monday-Thursday, 10 a.m.-4:30 p.m. Sunday. Admission free. 301/897-1518.
A permanent collection of the art of Phillip Ratner in sculpting, drawing, painting and graphics.
Renwick Gallery of the Smithsonian American Art Museum
17th Street and Pennsylvania Avenue NW. 10 a.m.-5:30 p.m. daily except Dec. 25. 202/633-1000.
Permanent collection of American crafts.
S. Dillon Ripley Center
1100 Jefferson Drive SW. 10 a.m.-5:30 p.m. daily except Dec. 25. 202/633-1000.
"Made in Northern Ireland: A Dynamic of Change." Through Sept. 10.
144 Constitution Ave. NE. 11 a.m.-3 p.m. Tuesday-Friday, noon-4 p.m. Saturday. Closed holidays. 202/546-3989.
A collection of women's suffrage memorabilia in an Early American home.
Smithsonian American Art Museum
Eighth and F streets NW. 11:30 a.m.-7 p.m. daily except Dec. 25. 202/633-1000.
"The Prints of Sean Scully." Through Oct. 8.
"Earl Cunningham's America." Through Nov. 4.
"Temple of Invention: History of a National Landmark." Through January 2008.
"George Catlin's Indian Gallery." Permanent exhibit.
The Castle, Constitution Avenue and 10th Street NW. 8:30 a.m.-5:30 p.m. 202/633-1000.
"West Wing: A Chronology." Permanent exhibit.
Steven F. Udvar-Hazy Center
14390 Air and Space Museum Parkway, Chantilly. 10 a.m.-5:30 p.m. 202/633-1000.
"James S. McDonnell Space Hangar." Dedicated display of space artifacts, including the Space Shuttle Enterprise. Permanent exhibition.
Imax theater: "Fighter Pilot: Operation Red Flag," "Hurricane on the Bayou," and "Harry Potter and the Order of the Phoenix" daily. $6.50-$8.50.
The Textile Museum
2320 S St. NW. 10 a.m.-5 p.m. Monday-Saturday, 1-5 p.m. Sunday. Closed holidays. Donation $5. 202/667-0441.
"Architectural Textiles Tent Bands of Central Asia." Through Aug. 19.
"Textiles of Klimt's Vienna." Through Jan. 6.
1644 31st St. NW. 202/965-0400.
Tours of this historic house, which belonged to Martha Washington's granddaughter, at 10 and 11:30 a.m., 1 and 2:30 p.m. Tuesday-Friday and on the hour 10 a.m.-3 p.m. Saturday. Sunday tour times are noon, 1, 2, 3 p.m. Reservations suggested for individuals, required for groups. Admission is $3-$6.
USDA Forest Service Information Center
14th Street and Independence Avenue NW. 8 a.m.-4 p.m. Monday-Friday, 8 a.m.-4 p.m. Saturday-Sunday. 703/205-1680.
Rustic lodge hosts videos and hands-on displays. On permanent display.
U.S. Holocaust Memorial Museum
100 Raoul Wallenberg Place SW (near 15th Street and Independence Avenue SW). 202/488-0400. 10 a.m.-5:20 p.m. daily except Yom Kippur and Christmas. Metro: Smithsonian. Certain attractions, such as "Daniel's Story: Remember the Children," do not require special passes. Entrance to the museum's permanent exhibition is by timed entry passes, available at the museum (free) or through ProTix ($4.50 service charge), 800/400-9373.
"Give Me Your Children: Voices From the Lodz Ghetto." Through Sept. 3.
Walters Art Museum
600 North Charles St., Baltimore. 11 a.m.-5 p.m. Wednesday-Sunday, to 8 p.m. Fridays. Free. 410/547-9000.
The Seldon Plan performs 7 p.m. Aug. 17, Graham Auditorium. Free.
"Gee's Bend: The Architecture of the Quilt." Through Aug. 26.
"Linda Day Clark: The Gee's Bend Photographs." Through Sept. 2.
"Ottoman Embroideries and Other Ornament." Through Sept. 9.
"Daily Magic in Ancient Egypt." Through Nov. 18.
Woman's National Democratic Club
At the Historic Whittemore House. 1526 New Hampshire Ave. NW. 9 a.m.-2 p.m. Monday, Wednesday, Friday; 2-5 p.m. Tuesday, Thursday. 202/232-7363.
Antique furnishings and presidential memorabilia, including rotating art exhibits. Call for tours.
Women in Military Service for America Memorial
Memorial Drive, Arlington. 8 a.m.-7 p.m. Metro: Arlington Cemetery. 703/892-2606.
"In Defense of a Nation" film runs every 10 minutes.
Permanent exhibits featuring artifacts and memorabilia of women's military service from the American Revolution to the present. Runs indefinitely.
Anacostia Museum and Center for African American History and Culture
1901 Fort Place SE. Open daily 10 a.m.-5 p.m. 202/633-4820.
• Art workshop: Groups will make masks, puppets, jewelry, dolls and action figures, journals, and memory boxes. 10:30 a.m. Aug. 17, 22, 24.
• Family scrapbook workshop: Create a family scrapbook with original copies of photographs, documents, yearbooks, certificates, and other artifacts. 10:30 a.m. Aug. 18.
Arthur M. Sackler Gallery
1050 Independence Ave. SW. Open daily 10 a.m.-5:30 p.m. 202/357-2700.
• "Encompassing the Globe: Portugal and the World in the 16th and 17th Centuries." Through Sept. 16.
• "Taking Shape: Ceramics in Southeast Asia." Through 2010.
Baltimore Museum of Art
10 Art Museum Drive, off the 3100 block of North Charles Street, Baltimore. 11 a.m.-5 p.m. Wednesday-Friday, 11 a.m.-6 p.m. Saturday, Sunday. Closed Monday, Tuesday. Admission free, except for ticketed exhibits. 410/396-7100.
• "Meditations on African Art: Color." Through Aug. 19.
• "Front Room: Ripple Effect." Through Sept. 2.
• "Nuno: Japanese Tradition/Innovation in Cloth." Through Oct. 7.
• "Rodin: Expression & Influence." Through April 6, 2008.
The Bead Museum
400 Seventh St. NW. 11 a.m.-4 p.m. Wednesday-Saturday, 1-4 p.m. Sunday. 202/624-4500.
• "Bead Timeline of History." Permanent exhibition.
Claude Moore Colonial Farm at Turkey Run
6310 Georgetown Pike, McLean. 10 a.m.-4:30 p.m. Wednesday-Sunday April through mid-December. $2-$3. 703/442-7557.
• An 18th-century living-history farm worked by staff and re-enactors.
• Participatory tobacco harvest. 1-4 p.m. Aug. 18.
Corcoran Gallery of Art
17th Street and New York Avenue NW. 10 a.m.-6 p.m. Sunday, Monday and Wednesday. 10 a.m.-9 p.m. Thursday. 10 a.m.-5 p.m. Friday-Saturday. $10-$14. Metro: Farragut West. 202/639-1700.
• Impressionism, Realism, Modernism: Works on Paper from the American Collection. Through Nov. 11.
• "Masterpieces: European Art from the Collection." Ongoing exhibition.
748 Jackson Place NW. 10 a.m.-5 p.m. Tuesday-Saturday, noon-4 p.m. Sunday. Closed holidays. Admission is donation only. 202/842-0920.
• "Gifts from the World to the White House: Caroline Kennedy"s Doll Collection (1961-1963)." Through Jan. 14.
• Tours of the 1819 house, which once belonged to naval war hero Commodore Stephen Decatur.
Department of the Interior Museum
1849 C St. NW. 8:30 a.m.-4:30 p.m. Monday-Friday except holidays, 1-4 p.m. the third Saturday of each month. 202/208-4743.
• American Indian Sculpture Garden. On permanent display.
Drug Enforcement Administration Museum
700 Army Navy Drive, Arlington. 10 a.m.-4 p.m. Tuesday-Friday. 202/307-3463.
• "Illegal Drugs in America: A Modern History." On permanent display.
2715 Q St. NW. Headquarters of the Society of the Colonial Dames of America. Guided tours 10:15 a.m., 11:15 a.m., 12:15 p.m. Tuesday-Saturday except holidays. 202/337-2288.
• American furniture and decorative and fine arts of the 18th and early 19th centuries.
Fells Point Maritime Museum
1724 Thames St., Baltimore. 10 a.m.-5 p.m. Thursday-Monday. $4, $3 for students, children and seniors; free for children 12 and younger. 410/732-0278.
Folger Shakespeare Library
201 East Capitol St. SE. 10 a.m.-4 p.m. Monday-Saturday. 202/544-4600.
• "Shakespeare in American Life." Through Aug. 17.
Frederick Douglass Historic Site
1411 W St. SE. 10 a.m.-5 p.m. daily except holidays. 202/426-5961.
• Reservations are recommended to tour the home. Tours are at 9 a.m., 12:15, 3 p.m., 3:30 p.m., and 4 p.m. $1.50 reservation charge. 877/444-6777.
Freer Gallery of Art
Jefferson Drive and 12th Street SW. 10 a.m.-5:30 p.m. daily. Closed Christmas. Metro: Smithsonian. 202/357-2700.
• "Parades: Freer Ceramics Installed by Gwyn Hanssen Pigott." Through Nov. 4.
• "Tales of the Brush: Literary Masterpieces in Chinese Painting." Through Jan. 13.
Gadsby's Tavern Museum
134 North Royal St., Alexandria. 703/838-4242.
• Tour the historic tavern and the City Hotel by candlelight and witness former guests' experiences before the creation of electricity. Every Friday. Through October. Tour times: 7 p.m.-10 p.m. $5. ages 5 and up.
Hillwood Museum and Gardens
4155 Linnean Ave. NW. By reservation 10 a.m.-5 p.m. Tuesday-Saturday. Reservation fee of $5-$12. 202/686-5807.
• Revitalized estate of visionary collector, philanthropist and businesswoman Marjorie Merriweather Post, reopened after a three-year renovation. Most comprehensive collections of 18th- and 19th-century Russian imperial art outside Russia and of 18th-century French decorative arts.
Hirshhorn Museum and Sculpture Garden
Independence Avenue and Seventh Street SW. Metro: L'Enfant Plaza. 10 a.m.-5:30 p.m. daily. Closed holidays. Free walk-in tours noon Monday-Friday, noon-2 p.m. Saturday and Sunday. 202/633-1000.
• "Black Box: Takeshi Murata." Through Sept. 9.
International Spy Museum
800 F St. NW. 9 a.m.-8 p.m. daily. $13-$16. Tickets available through Ticketmaster. 202/393-7798.
• Book signing: John F. Sullivan: "Gatekeeper: Memoirs of CIA Polygraph Examiner." Aug 16. noon -1 p.m.
Koshland Science Museum
Sixth and E streets NW. 10 a.m.-5 p.m. daily except Tuesdays. Closed Tuesday and holidays. Metro: Gallery Place-Chinatown or Judiciary Square. 202/334-1201. $3-$5.
• "Putting DNA to Work." On permanent display.
2401 Foxhall Road NW. Guided tours 10:30 a.m. and 1:30 p.m. Tuesday-Friday. Open to public 10 a.m.-4 p.m. Saturday except holidays. $5 suggested donation. Reservations required. 202/338-3552.
• Permanent collection of 19th- and 20th-century paintings and sculptures.
Library of Congress
First Street and Independence Avenue SE. 202/707-4604. Madison Gallery, Madison Foyer and Current Events Corridor, 8:30 a.m.-9:30 p.m. Monday-Friday, 8:30 a.m.-6:30 p.m. Saturday. Thomas Jefferson Building exhibition area, 10 a.m.-5:30 p.m. Monday-Saturday. Other exhibition areas, 10 a.m.-5:30 p.m. Monday-Saturday. Closed Sunday and holidays. Metro: Capitol South.
• Public tours. 10:30 and 11:30 a.m., 1:30, 2:30 and 3:30 p.m. Monday-Friday; 10:30 and 11:30 a.m., 1:30 and 2:30 p.m. Saturday. Group tours available on request.
• American Treasures Gallery. Thomas Jefferson Building. Through Aug. 18.
201 S. Washington St., Alexandria. 10 a.m.-5 p.m. Monday-Saturday, 1-5 p.m. Sunday. Closed holidays. 703/838-4994.
• "Building a Community: Alexandria Past to Present." On permanent display.