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

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

The highest bridge in America was built for an almost unnervingly small amount of money.

When ecosystems collide in the arid Southwest.

This nearly abandoned town was once a thriving mining community until a series of fires.

Community owned and operated, this property is home to a diverse set of nudists.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

Unlike most arches, this geological oddity formed in a volcanic dike.