Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Shrine to Japanese water-goblins, complete with their preserved body parts.

Once the home of a hermetic monk, this cave now houses a small church.

Art and a pun, all in one.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

A unrivaled and rather horrifying collection of wax dermatological models.

This museum houses an imposing skeleton army comprised of creatures great and small.

One of the greatest maze designer’s greatest mazes.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

The self-mummified monks of Japan.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

Museum about life, death, and cannibalism in the Stone Age.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

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

400-year-old garden, restored to beauty.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

A submerged village appears when dam levels drop.

The remains of Crystal Palace Great Exhibition of 1851.

An Italian hillside ghost town.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

The oldest operating pharmacy in the world features 800-year-old recipes.

Egyptian Revival movie palace abandoned for decades and restored in 2013.