A group of college students hauled a desk up a mountain more than 40 years ago. The notebooks inside have become a makeshift time capsule.

A series of haunting wooden totems are hidden in the woods surrounding a German environmental center.

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

The most impressive of Basel's three remaining city gates.

The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

A futuristic rocket marks the spot where three borders meet.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

This is one really big nut.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

World's smallest skyscraper, the product of a remarkable con.

A cheeky alleyway window hosts tiny rotating exhibits with outsized charm.

The "Seinfeld" diner.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

An exotic wildlife habitat right off The Strip.

The longest and widest floating bridge in the world.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

Some of the best pastries in "the Czech heritage capital of Texas" come from a gas station off I-35.

Toy museum in a former tavern is the expression of one man's life pursuit of the aesthetic power of cartoon imagery.

This quirky countryside store is known for the goats that hang out and eat the grass on its roof.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

The world's largest rotating world.