Three prestigious academic collections come together to create a world-class natural history museum.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Museum dedicated to awful artwork.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Over 315,000 preserved amphibians and reptiles in jars.

San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Yo, Adrian!

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Inside a former cabaret, seven floors of erotic art.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

An artist's cute bronze subway sculptures belie his violent artistic past.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Budapest's Communist-era statues, banished to the suburbs.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A monument to the art of slicing people open.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

The prototype for all Nazi concentration camps.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.