Britain's Queen Elizabeth II, left, walks with Pope Benedict XVI as they leave the Palace of Holyroodhouse in Edinburgh, Scotland,  following his formal welcome on the first day of his four day visit to Britain, Thursday Sept. 16, 2010.  Prince Philip following behind left and Pope's personal secretary Gerog Gaenswein, behind right. (AP Photo / Dave Thompson, pool)

Photo by: Dave Thompson

Britain's Queen Elizabeth II, left, walks with Pope Benedict XVI as they leave the Palace of Holyroodhouse in Edinburgh, Scotland, following his formal welcome on the first day of his four day visit to Britain, Thursday Sept. 16, 2010. Prince Philip following behind left and Pope's personal secretary Gerog Gaenswein, behind right. (AP Photo / Dave Thompson, pool)