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

A painfully obvious spy house sits right across the street from the Russian Embassy.

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

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

These abandoned waterworks are crumbling into the Potomac River.

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

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

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

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

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

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

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

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

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

There’s a special club house at the top for the bell ringers.

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

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

The school tested mustard gas for the U.S. Army during World War I.

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

Once the center of a thriving early Black community called Martinsburg.

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

Home to two notable early-20th-century Black educators, Lucy Slowe and Mary Burrill.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

One of the first Second Empire-style buildings constructed in North America.