In a historic steel foundry east of the Mississippi River, thousands of wooden crates hold the architectural remnants of buildings long gone but not forgotten.

Exquisite irises bloom every spring in this hillside garden.

Drive up a paved road into "Nevada's Yosemite" for exquisite views and mountain hiking in an alpine setting.

Now owned by the National Park Service, this location was once home to illegal boxing matches.

A crack flared at the base provides a pathway completely through a sandstone ridge near Moab.

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.

A mountaintop space observatory that is certified dark.

A shockingly detailed small scale recreation of the temples of Abu Simbel.

Ruins of an old sugar mill sitting quietly next to a park in rural Florida.

See Hoover Dam and the bypass bridge from a perspective usually off-limits to the public, and float the upper part of the Black Canyon National Water Trail.

The steepest tramway in North America provides stunning views of the out-of-the-way Wallowa Mountains in northeastern Oregon.

A spectacular overlook of the Little Grand Canyon of the San Rafael River, a deep sandstone gorge streaked with orange, red and white in a remote, uncrowded part of Utah.

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

An out-of-the-way state park in Oregon that features both a picturesque waterfall and the ruins of a hydropower plant.

This spooky road cut through a mound of ancient coral might be haunted by a witch.

A little-known occurrence of fossil wood in northern Washoe County, Nevada, near the Black Rock Desert.

It's safe—and permitted—to walk across these twin natural sandstone arches.

This large artificial waterfall in Washington state was merely an incidental byproduct of a technological megaproject.

Approximately 50,000 gallons of water gush from these springs, creating the Metolius River.

In Rickwood Caverns, visitors can travel hundreds of feet underground and see beautiful formations unique to the region.

This unique creation was made by the largest manufacturer of Christmas bulbs in 1946 to honor those returning from World War II.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

This New Orleans boutique and nursery specializes in rare flora, with a focus on carnivorous plants.