Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

Despite its name, this route in southern Utah offers a heavenly day trip.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

During World War II, this rice mill became a Nazi concentration camp.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

Derelict airplane bodies serve as both home and income for three Thai families.

The mystery of the Putim Ossuary involves a tricorn hat.

A collection of 100 brains preserved in jars on the UT campus.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

This conical hill was built as a testing ground for an engineer known as the Glider King.

The entire known universe of the ancient Etruscans is held inside this bronze model of a sheep’s liver.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

The caldera of this mini-volcano has been turned into a naturally heated mud bath.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.