One of only two commuter aerial tramways in the United States.

Rummage through this sunken ship, but leave your scuba gear at home.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

This was one of the first (and last) university-built and operated nuclear reactors.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

A gigantic 10-foot tall stone man.

One man's swirling six-acre monument of stone.

An abandoned castle owned and ignored by Masons carries a cursed history.

Enormous lake at the bottom of a unique cave system.

Mile-long cave system near Great Smoky Mountains.

The ghostly remains of an accidental sea.

The location of the last stand of Charles Manson's doomsday cult.

Pompeii's less famous neighbor is still revealing her secrets.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

When flour explodes, it's not a pretty sight.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

This attraction was abandoned after the Chernobyl disaster.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A historic covered bridge, only one of two remaining in North Carolina.

The site of one of history's most indelible and horrific tragedies.

A wunderkammer hidden on the top floor of the Hartford statehouse.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.