Almost all that remains of a town dedicated to supporting the First Transcontinental Railroad.

This lonely gas station has stood at this location since 1917.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The world's oldest soul food restaurant is also one of its best.

This lovely pocket park is one of the most under appreciated in D.C.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

The national park was once a plantation estate.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

A derelict bit of transportation infrastructure hidden in the woods.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Yo, Adrian!

Home to items never before seen by the public.

The United States Capitol's former columns still stand.

This tiny cottage surrounded by railroads is the oldest surviving structure in Fairmount Park.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.