A superb Paleo-Christian baptismal pool is preserved among the ruins of ancient Sufetula.

An airy Art Deco space devoted to the weird and wonderful folk art traditions of Mexico.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Take a dip beneath the stalactites in this amazing cenote.

This popular cave pool is truly magical, despite the crowds.

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

A cenote sitting in the middle of a parking lot shows the Yucatán Peninsula at its most urbanized.

One of the few places where you can visit a cenote and Maya ruins at the same time.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

A place to see how French aristocrats lived in the early 1900s.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

One architect's organic, human-centric design has been fully realized in this alien art house.

Avant garde house of Pierre Cardin on the Cote d’Azur.

Entire apothecaries are on display at this Lisbon museum, which explores the history of medicine.

A perfectly preserved small-town pharmacy and soda fountain that opened in the early 20th century and closed in the 1980s.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

French Time Capsule-19th Century home revealed to the public.

The Mexican painter Diego Rivera created this unusual museum to display his collection of pre-Hispanic artifacts.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

Located in the house where Gustave Flaubert was born, this odd museum has more to do with medical grotesquery than the Western novel.

Nicknamed the "Museum of Horrors," this French anatomical collection has been fascinating visitors for over a century.

This French anatomy museum greets guests with a skinless man, mid-shovel.

A dead saint, a deadly poison, and a mysterious holy ooze.