Also known as the Founding Church of Scientology.

A terrace reminiscent of Rome's Spanish Steps is tucked away in a little park in Washington, D.C.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

This small hilltop church weaves the urban history of Washington, D.C. with the national history of the United States.

The district's only illusionarium supports free writing programs for local students with every purchase.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

In an alcove of this historic library, you can find murals painted in the 1930s by an artist who went on to create some of Disney's most iconic animated films.

A haunting tribute to pioneering photographer Clover Adams.

An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

Every drop of D.C. tap water flows through this old waterworks.

This lifelike sculpture of a policeman serves as a helpful reminder to watch out for crossing pedestrians.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

A merry-go-round that became a rallying point for the early Civil Rights Movement.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

This poor little statue is the most vandalized memorial in Washington.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.