The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

This legendary urban waterfall creates a dazzling display of rainbows.

This black shoreline is made up of exploded lava particles.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

Ghost town with a beer-drinking goat for mayor.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A mysterious castle built as a monument to lost love.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

A monument celebrating the idea of reaching inaccessible places.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

An abandoned town is hidden in Great Smoky Mountains National Park.

The first KFC is on the National Register of Historic Places.

The world's longest known cave system.