This 100-foot tall bluff located in the western plains of Kansas overlooks a massive reservoir.

Visitors to Salt Springs State Park are encouraged to literally put their two cents in Penny Rock.

An improbable waterfall springs from an orange-white cliff face, tumbling into the headwaters of the Virgin River above Zion National Park.

This set of hot springs also comes with fantastic views.

Located in the remote Monitor Valley, this travertine bowl contains a scalding pool of water.

This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

A creek tumbles over a series of step-like rocks to create this scenic water feature.

A frozen oasis lies beneath the scorching New Mexico desert.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

Journey through various trails to discover a land before time along the Chazy Fossil Reef.

Narrow slot canyons in a badland eroded into soft sedimentary rock provide an otherworldly landscape in this remote Nevada state park.

These tall, red sandstone pinnacles outside Moab are often forgotten amid their more famous neighbors.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

Geothermal waterfalls in Tuscany.

A sulfuric hellscape in southern Italy.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

Over fifty whirling pools left by the glacial age.

A table rock formation that has been intriguing West Virginians for years.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

Mysterious rocks that ring musically when struck.