Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

The ghost town that ended up on Ebay.

The collection includes seven one-of-a-kind automobiles, vintage fashion, and more.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

The now-serene site of the largest earthquake ever recorded in North America.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Colorful boxes placed over the dead are left to rot and crumble.

A quirky roadside sign was the subject of a years-long legal standoff over highway right-of-way clearances. 

Considered by many to be one of the most dangerous highways in Alaska.

A suburban street in Anchorage doubles as a runway, and each home has its own airplane hangar.

A collection of anti-communist sculptures stands watch in the Mojave Desert.

A castle that was built stone by stone by an eccentric journalist.

This jagged colossus of a building is mostly held together by an enormous concrete exoskeleton.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

Nancy Thompson's Home from "A Nightmare on Elm Street."

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

This 'Murder House' grand mansion has starred in everything from Bones to Buffy.

One man's homage to the orange as realized through a long-term folk art labor of love.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

A colorful architectural gem in Seattle’s uniquely modern Central Library.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

66,000 pieces of art, donated by one of the world's richest men.

One Brooklyn man's collection of life-size fiberglass statues has taken over his entire yard.