Established in 1807 "for all denomination of people," this cemetery is the final resting place for such notables as U.S. Capitol architect William Thornton, Marine Corps march composer John Philip Sousa, Civil War photographer Mathew Brady, FBI director J. Edgar Hoover, and many members of Congress. Air Force veteran and gay rights activist Leonard Matlovich is also buried here under a tombstone that reads "When I was in the military, they gave me a medal for killing two men and a discharge for loving one." The cemetery is about a 20-minute walk from the Capitol. You can take your own self-guided tour year-round during daylight hours; pick up a map at the gatehouse or download one from the cemetery website. On Saturdays from April through October, you can join one of the free docent-led tours at 11. Additionally, on the third Saturday of the month at 1 pm, there are Civil War–themed tours. Narrated cell-phone tours are available by dialing 202/747–3474.