This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

A historic ballroom host to famous performers from the big band era to 1980s rock.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

The now-serene site of the largest earthquake ever recorded in North America.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

This lighthouse has been guiding shipping into the Golden Gate since before the American Civil War.

Pay a visit to America's oldest yarn shop.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

The National Park Service’s best-kept secret with views that rival any in D.C.

From a canyon-like gorge, more than 20 million gallons of water emerge every day, while a smaller spring drips down, creating the illusion of an endless, gentle waterfall.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

This Rocky Mountain mansion was the luxurious home of the authoritarian leader of a company town.

This massive solar generating facility in the Nevada desert has been plagued by difficulties.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

Is this 47.7-mile stretch of highway the longest straight road in the United States?

A Christian monastery stands on what was once a holy Incan temple.

The remains of Abó, Gran Quivera, and Qurai are monuments to the long, complicated history of the Indigenous people of the Southwest.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

A Kansas nature preserve protecting the plants and animals that once stretched across central North America.

A natural rock bridge towers above the sea.

Take a dip in the world's largest mineral hot springs pool.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.