Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

Large Hadron Collider and the Birthplace of World Wide Web.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

The best-preserved Roman small town in North Africa.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created with the discharge from a geothermal energy plant.

This sandstone mansion was the home of two of Oregon's most important pioneers.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A piece of Seattle’s historic Chinatown preserved inside a modern museum.

This former coal gasification plant found a curious second life as a popular public park.

Granting the right of way to ships over surface traffic since 1917.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Visitors to this library are in for a real-world education in modernist architecture.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.