Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

What was meant as an innocent piece of art has earned a reputation as the "mansplaining sculpture."

A World War II officers' club features Old West murals painted by German POWs.

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

Decades of discarded bottle caps line this alleyway, a fixture of Texas A&M.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

A medieval castle in the middle of rural Texas.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

The Grand Canyon of Texas.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

Patrick Dougherty's fantastic living tree sculptures, mind-blowing but temporary.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

According to the experts at the Guinness World's Record office, this is the longest candy counter in the world.

Beautiful natural falls where Satan once ruined a pot of beans.

Even Henry David Thoreau found this glacial pothole irresistible.

This architectural onion has an original 1930's Jerry O'Mahony dining car at its core.

The largest tidal whirlpool in the Western Hemisphere.

The most photographed house in Maine looks good enough to eat.