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

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

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

The famous artist couple lived and worked here, in two different houses connected by a bridge.

One of the world's largest murals covers a large swath of homes in its hillside neighborhood.

A beautiful example of 18th-century engineering still standing tall.

Mexico's astounding mummy museum with "the world's smallest mummy."

After an Illinois church was struck by lightning and burned down, Frank Lloyd Wright designed this replacement.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A historic and oft-filmed prison stands in a Chicago suburb.

A unique botanical garden housed in three giant geodesic domes.

This striking art museum holds an amazing series of curiosity cabinets.

One of the oldest and tallest lighthouses still in service on Lake Michigan.

Vikings and Evangelicals have both had a hand in this replica medieval church.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The largest offshore wind farm in the world would be even bigger if it weren't for some pesky birds.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

Single runway interrupted by a busy road that cuts across its middle.

This hidden bridge is where local children leave gifts and messages for the island's fay folk.

These barriers stand as stark reminders of Northern Ireland's troubled past.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

A museum marks and documents the site of the Titanic's launch.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.