A beautiful geyser under environmental threat.

The only road through the heart of Glacier National Park.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

A tunnel with windows, so you don't miss out on the impressive views.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

The current Eureka County Courthouse replaced an all-wooden structure that had previously been an ice-skating rink.

A whimsical, punny collection of "fence art" outside the tiny mountain town of Baker, Nevada.

The longest living non-clonal organisms on Earth.

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.