This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

A museum in the former home of Marxist revolutionary Leon Trotsky.

Frida Kahlo's childhood home, now a museum of her life and works.

The only castle in North America to ever house European sovereigns.

The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

The lasting remains of the region's once booming cement industry.

A small Richmond island dotted with the remnants of hundreds of years of history.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

The greatest amusement park in the world is wall-to-wall farting dogs, puking rats, and cows with exposed breasts for the whole family.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

The world's first combination ski slope and power plant.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

This Denmark theme park is part family attraction, part experimental archaeology project.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

There aren't too many operational funiculars around, but Pittsburgh has two!

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

On the grounds of a hospital in Ghana, a legendary sword said to have been plunged into the earth hundreds of years ago.

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

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