Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This legendary urban waterfall creates a dazzling display of rainbows.

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

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This black shoreline is made up of exploded lava particles.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

A true treehouse near Hawai'i Volcanoes National Park.

While exploring the desert, you can stop by the home of a fictional heretic from a parallel universe.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

The California capital city once stood 10 feet lower than it does today.

A replica of the first public theater built in California.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

An ode to Japanese artist Hokusai, with a bit of a comical twist.

Designed to not only to represent the history of the local community but also, the future.

The oldest still-operating tavern in the United States was once owned by a pirate.

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.

This urban oasis is a marvelous meld of music and landscape architecture.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

The artwork commemorates the many ways 20th-century people perished while on the clock.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The giant birds honor two native North American species.

Catch a glimpse of the elusive Peninsular bighorns right off of the desert freeway.

A UFO scrapyard in the California desert.