This Boeing KC-97 tanker is now a restaurant for aviation lovers.

The world's oldest and largest museum of mass transit vehicles.

An office built to look like a giant basket.

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

Don't blink or you'll miss it.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Vikings and Evangelicals have both had a hand in this replica medieval church.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

This whimsical stacked cabin looks like something out of a children's book.

The world's largest military aircraft cemetery.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Rare recess caves fill this unbelievably beautiful Ohio park.

An experimental, automotive replica of Stonehenge.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The largest drain hole in the world.

Quite simply the largest tree in the world (by volume).

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.