Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

This unique Seattle structure was designed to be the greenest commercial building on the planet.

This private home is famous for appearing in the cult-classic "Twin Peaks" series.

Train debris from the deadliest avalanche in United States history can still be found in the ravine where so many perished.

A cave interior in the shape of the ancient rhinoceros, created by lava cooling around its carcass.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

An unfinished rail tunnel that has since been used to house cheese and bats.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A collection of colorful dinosaurs hidden in an actual rainforest.

An emporium for the weird, creepy, rare, and just plain gross.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

This woodland architectural installation acts as a camera obscura for the heavens.

Memorial to the 137 lives lost on a ship fire, the whole hulk of which washed up on the Asbury Park shore.

This unassuming stone commemorates a condiment factory gone up in smoke.

First planned industrial community in the United States.

An odd and heartwarming stone marker enshrines the moment a community saved a farmer's pig that fell in a well.

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

A mental health hospital dating back more than 139 years, now features a museum.

“You better take care of me Lord, if you don't you're gonna have me on your hands.” ― Hunter S. Thompson, Fear and Loathing in Las Vegas.