The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The most visited, and possibly most controversial, museum in Germany.

An eerie, derelict amusement park in Berlin.

This concrete residential area doubles as an open-air gallery.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

This sprawling Jewish cemetery is one of the largest in Europe.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

The naturally mummified body of a peasant girl saint.

Anatomical cabinet holds unexpected treasures.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

One of the most important yet well-hidden museums dedicated to the history of medicine.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

The mystic whose incorrupt corpse still attracts the faithful.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

A hospital where antique dolls are given new life.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

A collection of objects supposedly singed by the hands of souls in purgatory.

Jesus' footprints and the first catacombs in the world.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The final resting place of the poets Shelley and Keats.