This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

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

The largest self-built castle in the U.S., six decades in the making.

World-famous, Pink's still manages to keep its prized cult fetish status.

Tiki luxury on Nob Hill.

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Home to items never before seen by the public.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A museum dedicated to the history and exploration of both popular music and science fiction.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The final resting place of New Orleans' most famous voodoo priestess.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A walk through the historic city center, under the streets of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A snapshot of the city's fascinating voodoo culture.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.