One of Frank Lloyd Wright's final works was this UFO church.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

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

This labyrinthine resting place of Black American leaders has been reclaimed by nature.

A crumbling hospital from the 1850s on Roosevelt Island.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Locals call this magical moss-covered walkway the "Emerald Path."

A gothic church spire sits atop this skyscraper, the tallest church in the world.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A beautiful geyser under environmental threat.

This geodesic gallery holds a collection of painted spheres that make traditional canvases look lazy by comparison.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

A field of nothing but boulders which resembles a giant's gravel driveway.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

A museum dedicated to exhibiting remarkable outsider art.

A treasure trove of rare and exquisitely detailed antiques

Home with Gothic windows featured in a famous painting.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.