A tunnel with windows, so you don't miss out on the impressive views.

The fifth-longest natural arch in the world, and the longest outside China.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A shockingly detailed small scale recreation of the temples of Abu Simbel.

A Prada store in the West Texas desert that is never open for business.

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

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

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

The approximate spot where the last Grand Master of the Knights Templar was put to death.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

The first all glass and steel residence in the United States.

From silent movie theater to rock &roll palace and beyond.

Two groundbreaking brothers from Pasadena.

A landmark for a trailblazer for female architects and the designer of one of the most famous and opulent buildings in California.

Sports history, made in the Arroyo Seco.

The simple auditorium that launched a pop icon's career into the stratosphere.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.