Geothermal waterfalls in Tuscany.

One of the largest, oldest, darkest, quietest motel rooms in the world.

Houses are tucked between, on, and underneath giant boulders.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

This Elizabethan hedge maze is one of only six in North America.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

Japanese island famous for poison gas and fluffy bunnies.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A beautiful 62-acre Catholic shrine and botanical garden.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

A legendary speakeasy bookstore returns from the brink.

One of New York's most iconic authors is strangely honored by this Oklahoma park.

Canyon walls shrouded in ferns.

A fifth-century temple improbably built into the side of a cliff.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Renaissance villa and gardens complete with a tormented colossus.

This frequently-photographed waterfall takes only a short hike to visit.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.