The span is crooked and made from two older recycled bridges.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

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

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

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

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

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

An overlooked oasis of quiet on the grounds of Washington's monumental basilica.

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

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

Before Nixon, "watergate" meant canals.

In the basement of the U.S. Capitol Building is a hidden storage room full of ornate floor tiles leftover from the 1850s.

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

Where the U.S. government kept its actual treasure, before Fort Knox.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

People escaping slavery may have hidden inside a corpse vault.

A historic ruin just 20 feet away from a busy highway onramp.

The privately owned cemetery that holds room for Washington's finest when they step down from life.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.