Largest man-made excavation on earth!

Visitors to this library are in for a real-world education in modernist architecture.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

Oddly shaped rock formation, misassociated with a nearby utopian community.

This quiet park's strange sedimentary spires were named after Kodak's color film.

Despite its name, this route in southern Utah offers a heavenly day trip.

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

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

These century-old beehive-shaped kilns were built to produce charcoal for nearby mines.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

Home to the deepest rift anywhere on Earth.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Massive fortified towers blend North American and Chinese architecture.

On special occasions, one of the world's tallest artificial waterfalls gushes down the side of this Chinese skyscraper.

Hundreds of caves filled with thousands of centuries-old statues and murals.

China's very own Atlantis is an ornate dynastic city resting at the bottom of a lake.

The field of tiny caves that mark this Chinese cliffside are each their own historic Buddhist temple.

Discovered after draining a local pond, these ancient man-made caves are still a complete mystery.

Massive series of 45 caves and over 51,000 sculptures carved from cliffsides in China.

Where the Great Wall of China meets the sea.

A tunnel dug through the side of a mountain by hand provides convenient yet death-defying access to a small village in China.

This Tang Dynasty behemoth is the biggest Buddha in the world.