The mystery of the Putim Ossuary involves a tricorn hat.

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

Mysterious painted skulls in Moravia.

The name doubles as an appropriate adjective for this small ossuary.

Two stunning 17th-century libraries and a cabinet of curiosities.

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

These jeweled relics have a scandalous and contested past.

A graveyard and memorial chapel for victims of leprosy.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

One of the most well-known city festivals in the world.

A rare example of a German cemetery with traditional grave markers dating back several generations.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

From morgue to urn, watch the whole process at this unusual educational attraction.

The natural mummy of the less than chivalrous Knight Kahlbutz.

A quaint Russian village in the middle of a German metropolis.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

The last bastion of Roman presence north of the Alps looms over a German town.

In a small churchyard in Dingolfing, Germany the quaint Schusterkapelle is there to remind you of your imminent mortality.

Wax models of disease and deformity are on display at this German medical museum.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

In this truly magical place, rent hasn't been raised since the year 1520.

In 1830, cemetery workers in Cham unearthed a chamber housing thousands of skeletal remains from the 13th century, which can still be viewed today.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.