The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

Surrounded by a verdant garden and a backdrop of ivy, a monument to beloved poet Khalil Gibran stands outside of the Lebanese embassy.

This apartment building designed by a notable Washington D.C. architect housed the Qing Dynasty's Legation.

A much-maligned monument to teetotalism.

A haunting tribute to pioneering photographer Clover Adams.

Go take a picture with the inventor of the daguerreotype photographic process.

One of the last mosaic tile facades found in the city.

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

This grand gothic brewery has been pumping out suds for over a hundred years.

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

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

When it comes to handsignals (and colonialism) rock always beats scissors.

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

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

The legacy of a wealthy executive and his wife, this little-known art museum features works by Picasso, Monet, Renoir, Cezanne, and more.

The headquarters of the Audubon Naturalist Society is a small slice of heaven for nature lovers.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

A museum dedicated to Latvian history in the heart of Maryland.

Exact replica of the ancient monument, but much, much lighter.

This historic mansion was built as a symbol of love between a husband and wife.