This French cemetery houses some of the most exquisite examples of funerary art in Mexico City.

Located in a veterinary school, this macabre exhibit displays the effects of animal diseases.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

You can release a young butterfly at this beautiful indoor garden.

Get a privileged view over Mexico City's Historic Center from a terrace right in its heart.

The ruins of an ancient temple to the Aztec wind god discovered in the middle of a metro station.

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

A scientific repository of goiters, boils and other ailments throughout Mexican history.

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

Twelve natural mummies are displayed in the crypt of this former monastery school.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

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

Museum preserving torture methods from the past.

A beloved local artist has been honored with this statue of a man emerging from a toilet.

This building features dozens of faces along its facade, although one is a bit chilling.

A diverse collection of wax, bone, papier-maché and mummified relics.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

The mummified relic of St. Catherine sits forever on a golden throne.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

This zoological museum began as the first great curiosity cabinet.

An extraordinary collection of 18th century anatomical waxworks.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.