A church filled with the bones of hundreds of virgins martyrs—or so they say.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

An intricate and amazing house built by architect Karl Junker.

A striking 12th-century-style castle built on the edge of a cliff.

A small but immensely extravagant palace built by the "Night King."

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The fairy tale castle of the "fairy-tale king."

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This hidden art nouveau gem was designed by an architect in search of a national style.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

A towering baroque basilica jutting out of the French countryside.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

Perhaps the most beautiful of preserved saints, with a little help from Paris.

Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The encased skull that is widely believed to belong to St. John the Baptist.

Saintly bones pressed into a wax effigy of a Catholic superstar.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

One woman's decades-long obsession with the "La Fée Verte."

An ancient monastery, a locked room, and a mysterious book heist.