This unusual lava tube spouts seawater during high surf.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

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

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Over a thousand feet beneath the Detroit streets is a subterranean metropolis few are allowed to enter.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

World's largest Christmas store.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

This super steep hike ascends 2,000 feet in less than a mile.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

This museum offers an actual time machine back through Colorado's past.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

A couple turned their front yard into an artistic masterpiece.

A massive sea stack famous for its appearance in The Goonies.

Two massive rock outcroppings on the Oregon coastline.