When you go:

Location:

2121 Crystal Drive, Suite 0100, Arlington

Parking:

Pay parking available on Patent Office property; limited on-street parking

Hours:

Mondays through Fridays, 8:30 a.m. to 4:30 p.m.; closed on federal holidays.

Cost:

Free

Information:

703/305-8341 or www.uspto.gov

Avoid:

Taking a large group. The museum is small and can be viewed in about a half-hour. Lunch hours are busiest.