Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

This former mining town was named the most toxic town in America.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

Nature's biggest mammal swims in landlocked Oklahoma.

Tucked away on an empty wooded lot in suburban Oklahoma City lie the remnants of an abandoned circus camp.

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

One of the best examples of Art Deco architecture in the United States.

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

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

This beacon for pre-radar pilots once guided Charles Lindbergh to a safe touchdown in Tulsa.

These massive mitts are made of 30 tons of devotional bronze.

This abandoned, windowless concrete block is one of the strangest buildings in Tulsa.

An acoustic anomaly with a mysterious cause.

Walk in the footsteps of the gods and straddle two tectonic plates.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

Natural rock water slides hidden in the remote forests of northern Idaho.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.

A few dilapidated structures are all that remain of this deserted former silver mining town.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

Supposedly Satanic numbers adorn this preserved submarine sail.

Secret Manor, a house full of legends, the least of which is the haunting of long-deceased ladies of pleasure.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

Water flowed out of the town's unusual tree stump fountain in the 1930s, and the well still runs today.

An enormous image of Utah's salt flats made entirely from tape.