One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

A Cuban artist reclaimed his impoverished neighborhood as a dreamy folk art kingdom.

It's a pretty creepy lock-up.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

The world's largest fire hydrant is supposedly tornado-proof.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

The first declared National Monument in the United States.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Yo, Adrian!

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The first American department store, and home to the largest operating musical instrument in the world.

The site of the deadly Triangle Shirtwaist Factory Fire.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A short nature trail winds through the greatest works of poet Robert Frost.

Former abode of notable poet, complete with literary references and stories of ghosts.

America's oldest archaeological site or a muddled case of wishful thinking.

A wall of chewing gum moonlights as collective art.

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

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.