The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This bazaar is one of the oldest in the Arabian world.

An imposing Omani fortress surrounded by date palm trees.

Stained glass windows bathe this botanical garden in cosmic light.

CDMX's home for the world's culinary delights.

The ruins of an ancient city built by Mayan traders is centered around a temple of a sacred feathered serpent deity.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

The stoutest tree in the world.

An indigenous take on European design creates a stunning visual overload.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

A massive yet whimsical statue pays homage to the art and joy of "flight."

This beautifully deceptive waterfall is something far different from what it appears to be.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

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

Legends surround this jagged rock formation in the New Mexico desert.

The first declared National Monument in the United States.

"We Seceded Where Others Failed."

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.