Places neonsewers Wants to Go

A mountaintop space observatory that is certified dark.

These eerie outliers of the lightning bug family glow a mysterious blue color.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

An abandoned water sports stadium that has become a haven for graffiti and decay.

When this test site was abandoned, they didn't even bother to take the rocket with them.

Trek up to an abandoned fire lookout from the 1930s for an unimpeded view.

An abandoned 1920s school with a mysterious history.

This abandoned school has had many lives since the early 1900s, and all of them doomed.

An eight-sided home built during a brief octagon craze in the 1850s.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

An Industrial Revolution-era public work that purified water using nothing but sand.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

The ruins of an 18th-century mansion that was once named "Mistake" by the man who had it built.

The FBI's urban training course may have the highest fake crime rate in the world.

A glimpse into the sacrifices of military members during World War II.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

This historic mansion was built as a symbol of love between a husband and wife.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

One of the few surviving examples of the first lock and dam system built on the Ohio River.

The isolated final resting place for perished coal miners.

An abandoned town is hidden in Great Smoky Mountains National Park.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.