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

The mystery of the Putim Ossuary involves a tricorn hat.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

Colorful boxes placed over the dead are left to rot and crumble.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

The second oldest continuously operating bar in Louisiana.

According to one local tradition, the entrance to the Voodoo underworld can be found in New Orleans through seven gates scattered throughout the city's French Quarter.

A snapshot of the city's fascinating voodoo culture.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

The Magical World of George Phar Legler.