At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Traditional 15th century Chinese garden in the middle of Vancouver.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Home to the "Circus" trees created by Axel Erlandson.

When ecosystems collide in the arid Southwest.

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Shop of curiosities with a dinosaur museum tucked in its basement.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This expansive bridge in the Canadian wilderness was originally just built for friends.

See massive fossils that are over 200 million years old in northeastern Arizona.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Quite simply the largest tree in the world (by volume).

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The world's longest known cave system.

A museum dedicated to the alleged Roswell Incident.

The magic's in the hole!

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

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