The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

This historic train station has been converted to a locomotive themed hotel.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Taking the 3D art experience far beyond blue and red glasses.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

Entering this curiosity shop is like stepping into a mad scientist's lab.

A beautiful 62-acre Catholic shrine and botanical garden.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

A museum and shop on Bourbon Street located in the French Quarter.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This unique bed and breakfast was first constructed during the 1800s by a Russian immigrant family.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

A spectacular impact crater in the rugged heart of Central Australia.

Ancient human, animal, and geometric figures drawn in the earth.

Flames have been burning within this mountain for more than 2,500 years.

Ingenious bakery opens up the first Cupcake ATM at their flagship location in Beverly Hills.

This 16th-century Moroccan fortress-turned-armory museum offers prime views of the historic quarter in Fes.

Morocco's largest Jewish cemetery.