Once the path of a railway tunnel, now home to thousands of glowing insects.

Bioluminescence in the reefs of the Maldives causes the sea to glow like a starry night sky.

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

An abandoned railroad tunnel is now filled with bioluminescent bugs.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

In what is rumored to be an intentional act of spite, this memorial almost completely obscures the nearby grave of a senior officer.

A surviving concrete arrow from a 1920s navigational network is preserved right off a modern freeway.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

Historic funicular railway, believed to be the shortest railroad in the world.

The private clubhouse for the members of the Academy of Magical Arts.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

World-famous, Pink's still manages to keep its prized cult fetish status.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Resting place of Hollywood's immortals is also site of summer film screenings.

Shop selling 500 flavors of soda has something for everyone.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

The legendary building that needed ghostly approval before being built.