This tiny little island has, as the name says, just enough room for its single house.

A Frankenstein blend of science and art allows one tree to produce 40 different types of stone fruit.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

A natural gas leak provides a flickering flame beneath a waterfall.

New York City's smallest piece of private property.

Once a year, at exactly 11:11 a.m., this monument comes to life.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

Celebrating the greatest pugilists the world has ever known.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

A hip bar decorated with walls of golden skulls.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A hands-on traveling collection of the innovative devices of yesteryear.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

Try not to get slimed in Tribeca.

A terrific purveyor of natural history objects and curios.

Sloth rehabilitation center in the jungle of Costa Rica.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

Stay overnight in the world's most sleekly designed rabbit hole, free of charge.

A replica of a famous Greek statue adorns the front of the unusual home of architect and alchemist Humberto Pittamiglio.