An urban laboratory.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

Regency-era excess on the English Coast.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

The anatomical-pathological collection of a man who changed surgery.

A hands-off space for graffiti artists to hone and display their skills.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

The celebrated eyesore created by starry-eyed sweethearts.

Elevated freight railway turned wildly successful urban park.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

A book bound in the skin of an infamous criminal, along with countless other specimens.

The astonishing collection of an infamous criminologist.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

A terrific purveyor of natural history objects and curios.

When the rain falls, this drain system turns into a musical instrument.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.