This family-owned diner has been slinging chili dogs since 1940.

A mini-Stonehenge in the corner of the North Carolina state capitol grounds.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

This woodland architectural installation acts as a camera obscura for the heavens.

An oddity shop filled with taxidermy, funerary memorabilia, and more.

Proceeds from this colorful teahouse in a historic Atlanta neighborhood directly fund women’s education in northeast India.

This old school, eccentric, and independent video rental store refuses to die.

This stone is a marker of one millionaire's personal vendetta against gravity.

A local dive where religious kitsch, Southern identity, and queer culture collide.

Healing Springs that once ran red with soldiers' blood.

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

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

There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

This unassuming passageway played a key role in one of the most important events in U.S. history.

The tunnel under the Capitol Building where Congress takes out its trash.

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

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

This groundbreaking 16th-century map is known as "America's birth certificate."

A nostalgic bibliographic gem.

100 years later, they're still down there.