Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A hidden beach at the end of a tunnel of mangrove trees.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

The fifth-longest natural arch in the world, and the longest outside China.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

An underwater statue of Christ blesses the coral reefs off Key Largo.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

Colorful Native American paintings are hidden within this small cavern.

The ruins of the castle that chemicals built.

A layered tribute to the work of mosaicist Isaiah Zagar.

The world’s first penitentiary, meant to be humane, drove men insane.