This church in Pittsburgh is home to the largest collection of religious relics in North America.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

These disused steel furnaces are now haunting ruins that may one day be a national park.

A unique workspace where offices reside on pirate ships and inside gingerbread houses.

This icon of the Atomic Age now lays dormant.

The legendary building that needed ghostly approval before being built.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A Victorian mansion, painstakingly reproduced to appear just as the the Munster's family home did on TV.