Microscopic scenes; some call it novelty, some call it art.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Giant heads occasionally litter the industrial Houston neighborhood where sculptor David Adickes has his studio.

Two stunning 17th-century libraries and a cabinet of curiosities.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Hoax, mistake, or evidence of dinosaurs in human times?

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

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

A fake Transylvanian castle houses a cathedral of antlers.

A battle between nature and architecture in the Cambodian jungle.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

Centuries-old bridges grown from tangled roots.

A walk through the historic city center, under the streets of Seattle.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Budapest's Communist-era statues, banished to the suburbs.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A wall of chewing gum moonlights as collective art.

Elevated freight railway turned wildly successful urban park.

A hundred copies of Antony Gormley's naked body stare out across the water.

A monument to the "father of modern warfare" Gustav II Adolf.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.