A toxic ghost town sitting atop a massive coal fire.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

This demolished goliath of American industry once loomed over the depressed town it once made thrive.

Intricate storybook scenes are tucked inside these shadow boxes, which are tucked inside a library in the Pocono Mountains.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

A rare kind of blue bear can be found chiefly in the national park that shares their name.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

Series of storm drains connected to a dark urban legend.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A celebration of capitalism in Midtown.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

The summer home of the largest colony of bats in the world.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

These abandoned grain silos and tunnels are an urban exploration dream.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.