This picturesque abandoned home is rumored to be a spite house.

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

This small-town library was the first in the world to be entirely supported by taxation.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

Twenty churches beautifully painted by 19th-century Czech and German immigrants in Texas.

A popular swimming hole that hides one of America's most deadly diving spots.

An emerald-green grotto just a short trip from Austin.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Free public park and gardens filled with peacocks and peahens.

DIY collection of eclectic holdings.

Unusual house, in an unusual neighborhood, home to some very unusual peanuts.

One part antique store, one part curiosities hodge-podge.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

Continuing the tradition of the dime museum in style.

Secret refuge and museum of the Duke of Florence.

The eccentric mansion of one the most popular horror authors of modern times.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

A decommissioned military complex that's now a modern industrial park.

Over fifty whirling pools left by the glacial age.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.