A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

This massive swimming pool is the high tech home to the human-powered submarine races.

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

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

There's a crumbling old mansion inside the Smithsonian National Zoo.

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

A surprising, but overlooked example of geology in the middle of the nation’s capital.

When it opened during the final years of the embargo, all the drinks and cigars were free.

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

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

The United States Capitol's former columns still stand.

This suburban house is made of dirt, and almost sparked a revolution in home construction.

A celebrity from the late Cretaceous period.

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

Proto-CIA agents trained with grenades in the sand traps and fired machine guns from the fairways.

This grisly headstone doesn’t seem to be resting in peace.

The towering figures were created from the cemetery's fallen old-growth trees.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

An Industrial Revolution-era public work that purified water using nothing but sand.

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

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

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

A clone of a cloned tree that was so important it allegedly had its own guards.

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