A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

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

Multiple waterfalls and several historic CCC buildings anchor this state park in Oregon's Willamette Valley.

On the Oregon coast is a natural hole that seems to be draining the sea.

A memorial for the mustachioed record-setting runner.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

The only Florida state park with publicly accessible caves.

A humid oasis combines recreation with exploration in a unique underwater cavern.

Working compound meant to allow visitors to reclaim the values and traditions of the past.

Water still flows through the oldest Spanish aqueduct in America.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

These boots are made for selfies.

Ruins of a once-opulent grand Victorian resort.

Three hundred years of preserved Spanish colonial history in San Antonio.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

A motel dedicated to Southwestern nostalgia.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

An urban laboratory.