The hidden lair of an alchemist rediscovered in a 2002 flood.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

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

Fifty years of contamination in Scotland's waters.

Weird wax anatomical models reside here, as do other anatomical specimens.

This medieval chapel is now a shrine to the region's favorite sport.

This folk museum is devoted to small figurines of provincial village life.

This 18th-century sundial was designed to calculate the date of Easter each year.

A unique zoological park home to over 30 species of wild cats, both big and small.

The somewhat misnamed 'Garden of Shells' lovingly built from found objects.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Experience architect Le Corbusier's modernist design for living in the home he designed for himself.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

A unique underground structure dating back to the 1st century BC.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

Charnel house at the foot of Mount Sinai.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

A house of bones — but nobody is quite sure to whom they belong.