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.

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

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

A tunnel of hardened lava along Maui’s famous Road to Hana.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

This WWII plane died a quiet death, and is now a garden eel playground.

Submerged lava formations create incredible waterworks.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

This former luxury resort in Kaua'i is now an abandoned relic.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

The remnants of a failed socialist commune can still be found just off a California highway.

Exotic feline breeding compound and conservation center.

This impressive tunnel was dug entirely by hand over the course of 36 years.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

The last Americana on Route 66.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

One of the ghostly stops along Route 66.

In California, colorful roadside signs remind us all that love transcends borders.