This North Carolina grave is the final resting place of the world's most famous conjoined twins.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

A well-preserved example of an early industrial operation in the northeastern United States.

America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

There aren't too many operational funiculars around, but Pittsburgh has two!

A full-service gas station known as the oldest in America.

A 20-foot-tall quarter commemorates George Washington’s ties to Bedford County.

Built in the 1970s, this curious modular home found new life as a sundae-shaped ice cream stand.

The only surviving prototype for Buckminster Fuller's house of the future.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

Rumors persist that a bottle of whiskey is sealed within this Demijohn-shaped adornment.

During World War II, over 13,000 people of Japanese ancestry were forcibly removed from their homes and incarcerated in this camp in the Idaho desert.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

Dozens of rockets and missiles are on display outside a testing facility in the Utah desert.

Water flowed out of the town's unusual tree stump fountain in the 1930s, and the well still runs today.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.

Largest man-made excavation on earth!

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

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