National Inventors Hall of Fame and Museum

Predecessor to the better-known Arlington National Cemetery.

Designed and built by Freemasons in the 1930s, this monument to George Washington was made to resemble the Lighthouse at Alexandria, one of the seven wonders of the ancient world. Free tours are available daily except on major holidays. The tour takes visitors through a unique series of rooms each designed to illustrate some element of Freemasonry and presents visitors with artifacts from the group's past. At the end, visitors are treated to an outstanding view of Washington D.C. and Old Town Alexandria.

A museum with exhibits about the slave trading firm and the life of a slave

An 1855 firehouse, now a museum.

A mid-19th cemetery for African Americans that was abandoned and later restored as a memorial.