A startling waterfall, not far from a roadside viewpoint.

Once a mining boom town, Mogollon’s well-preserved buildings are tucked away in the mountains of the Gila National Forest.

A unique auditory experience right on the sidewalk.

The largest and most well-preserved petroglyph site in the Verde Valley.

This oversized flute-playing Ancestral Puebloan deity is also a landmark of Southwestern kitsch.

A spiritual vortex among the red rocks in Sedona.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

It is intended to take one back to a stripped-down simplicity, to spend extended time both inside and out, and absorb the natural drama of the Upper Rio Grande Valley.

Secluded springs in the Rio Grande Gorge offer hot bathing beside the haunted ruins of a stagecoach stop.

This small museum is dedicated to telling the 4,000-year story of Palestinian history, culture, and resistance.

Colorado’s most beloved glacier is an imposter.

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

This rowhouse doubles as one of the most photographed spots in the nation's capital.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

An overlooked memorial honoring the local Washington residents who died in World War I.

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

There’s a hidden military meme engraved on the World War II Memorial.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

The most decorated dog of World War I is preserved in the Smithsonian.

This taxidermy horse was a Civil War hero.