Minnesota's oldest and deepest mine is now an underground physics laboratory.

Where you can photograph wild black bears without worrying about becoming dinner.

Home to a 26-foot-tall statue of an American icon.

The largest Walleye statue in the world calls this Minnesota town home.

An oil baron's wild paradise and the winner of an ill-fated air race.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

Sid Vicious famously punched a hole in the wall of this iconic music venue.

A half-size replica of the World Trade Center towers above Tulsa.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

Nature's biggest mammal swims in landlocked Oklahoma.

This historic folk art garden contains a nightmare tower that claims to be the world's largest concrete totem pole.

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

A beach made of semi-precious green sand on the Big Island of Hawai'i.

This black shoreline is made up of exploded lava particles.

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.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.