A collection of objects supposedly singed by the hands of souls in purgatory.

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

Nearly 100 concrete graves lie hidden just beyond the pristine waters along the coast.

An underwater restaurant, surrounded by a coral reef.

An eatery in a shallow river where diners can enjoy their meal mere feet from the base of an artificial waterfall.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The beautiful baroque library of the Hapsburg empire.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

An underground city of salt.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A crumbling hospital from the 1850s on Roosevelt Island.