This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

This last stalwart of the now-forgotten feminist restaurant movement has been serving food in an activist atmosphere since 1977.

How a lunch counter in Chile became a shrine to the 42nd president of the United States

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

More than 250 sakes are available in an izakaya hidden in the basement of a Midtown office building.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

These pillars at the main entrance of this church are actually a hidden musical instrument.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

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

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

The United States Capitol's former columns still stand.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

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

Largest Roman Catholic church in North America.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

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

A nostalgic bibliographic gem.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.