The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

These sculptures honor the knights who once called Carrickfergus Castle their stronghold.

A replica memorializes the site where women were punished after the last witchcraft trial in Ireland.

A memorial to a goat culled during a foot and mouth disease outbreak guards a series of fantastical caves.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

Eyam took steps to quarantine themselves and keep the plague from spreading.

Three buildings constructed of over 25,000 multicolored glass bottles.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

A museum in the childhood house of a medical pioneer.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

A standing relief of a Norman knight whose posture marks him as a Crusader.

A heavenly experience, right here on Terra Firma.

This solo operation offers the world's only whey wines in flavors such as chocolate-orange.

Only known mainland rookery of the threatened Stellar sea lion.

Site of one of World War I's most horrific scenes.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

A swath of France so devastated by war it is still forbidden to go there.

Bat house that has only ever housed bat for one night; they all flew away and never came back.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.