Each year melting snow turns these Austrian hiking trails into scuba zones.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

Devilish masks, handicrafts, and pieces of old buildings create a snapshot of life in a historic Alpine region.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

Breathtaking and huge 430 year old maps of Italy.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

This splendid tomb may look fantastic, but there's nothing in it...

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

2300-year-old Roman road connecting the empire.

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A sculpture serving as an homage to Pope John Paul II.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

An alchemist's "magic door" stands in the middle of a Roman park.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

An abandoned Byzantine fortress and notorious prison.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.