Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The last SR-71 ever constructed.

Come for the speed, leave in love with the desert.

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

An art gallery home to a plethora of art from local artists who can often be seen hard at work.

Ride a mechanical corn dog at the alleged birthplace of America's favorite deep-fried wiener.

A vertically floating hemlock controls the waves and weather at Crater Lake.

10,000 flowered plants bloom in the City of Roses.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

This historic boathouse was constructed using salvaged lumber from burned barns.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

This groundbreaking 16th-century map is known as "America's birth certificate."

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

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

The "lovely red Vega" of the legendary record-settling pilot.

Washington's iconic carousel has a nice piece of Civil Rights history.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.