A building so large that it has its own weather.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

St. Augustine's record-setting narrow street was designed to protect against pirates.

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

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

This small-town pizzeria won the Hollywood lottery.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

A fake town founded by Western movie stars is now becoming a hip desert community.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The only diamond mine in the world where you can keep what you find.

What happens when a sculptor has to find a way around a 100-year-old copyright.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The clever workshop that has been designing some of the most unusual coffins imaginable.

An enormous public square and parade ground built to celebrate Ghana's independence.

Where thousands of slaves passed through the "Door of No Return."

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.