The fifth-longest natural arch in the world, and the longest outside China.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

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

The unusual patterns in this rock formation result from two distinct modes of weathering.

Once a black market electronics marketplace, now an otaku shopper's paradise.

The original "capsule building" is a masterpiece of Metabolist architecture.

This supermarket is suspended 25 feet above an interstate highway.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

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

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

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.

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

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Packed with gear and memorabilia, this museum chronicles the history of skiing and how its rise shaped New England.

A serene plaza that commemorates one of the Granite State's most iconic figures.

The 92-foot-tall structure is based on the aircraft that carried the first Americans into space.

Maybe the only missile installed in a public park, this Cold War leftover was one of the first to carry a nuclear warhead.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

Eat first, shop later at this eatery within an Asian grocer.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.