The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A church of bones, decorated with 40,000 human skeletons.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Church featuring "high Victorian gothic" architecture.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

How did a massive marine arthropod find its way to landlocked Ohio?

Known as one of America's most beautiful public restrooms.

Norway has built what may be the world's most beautiful public toilet.

These unique toilets feature transparent glass covered in PDLC film.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

A floating McDonald's built for Expo '86 is now a derelict relic on Burrard Inlet.

A boulder in the Churchyard of Down Cathedral marks the legendary burial place of "The Apostle of Ireland."

This fortified L-shaped tower is the ancient seat of clan Hannay.

A mixture of strange symbols, ciphers, words and cryptograms carved in 1876 remain unsolved to this day.

At night, this glittering musical tunnel draws skaters and photographers.

A road runs through the middle of this small Austrian chapel.

A university observatory dome painted to resemble the beloved 'Star Wars' droid.

The pit stop from "The Texas Chainsaw Massacre" now serves beef and pork barbecue, not people.

The world's largest squirrel statue clutches a pecan bigger than your head.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

A Texas landowner spelled out his name with three miles of trees, a giant signature that's been used by NASA to evaluate satellite imagery.

An essential stop before plundering, BYO Cutlass.

Get a taste of Chamorro cuisine, family-style, at this popular restaurant.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.