A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

This picturesque abandoned home is rumored to be a spite house.

An abandoned Depression-era zoo hidden just off the highway.

The unusual lighthouse looms over waves of prairies with no sea in sight.

An overgrown garden stands as a grim marker of an unrealized dream.

A massive, fading granite poem is all that remains of one Whitman superfan's tribute to the famous writer.

The skyline of Montreal includes the silhouette of an unexpected fruit-shaped Canadian staple.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

Site of the first official transatlantic wireless communications.

An unrealized dream to wirelessly electrify the entire Earth.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

A walkable map of the world, made from soil and stone by one man.

The United States Capitol's former columns still stand.

A tongue-in-cheek arcade where the games are based on everyday life.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

The only surviving prototype for Buckminster Fuller's house of the future.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

The Arctic Archipelago is home to world's largest third order island: an island in a lake on an island in a lake on an island.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.