This shallow cave got its name from copious amount of human bones found inside.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Astounding collection of coin-operated games and automata.

Turnip-shaped island just off the Michigan shore in Lake Huron.

Some of the most unusual (and in some cases, disgusting) flavors of soda imaginable.

An Old West film set seen in countless TV shows and movies is open for the public to explore.

View the California coastline (and the home of Barbara Streisand) inch by inch with stunning, government-sanctioned aerial photography.

French prisoners carved these boats from the bones of their meat rations.

An informal walk of fame in front of a Hollywood office building remembers a comedic great and his associates.

Rusty pieces of metal jutting out of a breakwater are all that's visible of the 12,500-ton ocean liner that capsized just off the beach.

Giant origami crease patterns engraved in Santa Monica intersections may even be visible from space.

This Hollywood dive houses a mural painted by the artists who animated its namesake film.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

Malibu's first beach home features an astonishing trove of ceramic tiles.

Seven ceramic sculptures are scattered around this California college campus.

The blinking light atop the iconic landmark has been sending secret messages for decades.

A second generation sun-powered marvel lights up the night.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

Rusty industrial city full of oxidized distillation towers.