Willy Wonka would love this weird half-a-home.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

Walk into the 19th century without leaving Brooklyn.

Sniff the Titan Arum's rotting flesh.

Memorial to the 137 lives lost on a ship fire, the whole hulk of which washed up on the Asbury Park shore.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

One of Europe's oldest libraries.

Used as an example in one of the first dictionary entries for "museum" in 1706.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

The spur that wouldn’t die.

Granting the right of way to ships over surface traffic since 1917.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

This former coal gasification plant found a curious second life as a popular public park.

A wall of chewing gum moonlights as collective art.

This working class sculpture pounds his hammer all the livelong day.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

This playground sculpture of an icon from the past is dedicated to the children of the future.