Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

The world's brightest bioluminescent bay.

An enchanting natural wonder in Puerto Rico's Camuy River Park.

A Prada store in the West Texas desert that is never open for business.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

Site of the largest volcanic eruption in the last 25 million years, one which may have nearly wiped out humanity altogether.

Relics of Australia's convict past, and a modern scene of unimaginable horror.

A giant Troll lurks under one of Seattle's oldest bridges.

The tallest waterfall in the Judean Desert is named for its connection to a biblical figure.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

In Mumbai, a bright blue synagogue is the largest one for the Baghdadi Jewish community in Asia.

The world's second largest single-dish radio telescope, once used to contact E.T.

Years of neglect and nature took a toll on this 19th-century lighthouse.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

Elevated freight railway turned wildly successful urban park.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Limestone caves with spectacular showcase chambers.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

A series of tiny artificial islands rich with produce bob atop the surface of the lake.

An isolated dive site teeming with cnidarians.

The world's first commercial spaceport is a disappointment of cosmic proportions.