A striking sculpture built to honor the women of the Lakota and Dakota Nations.

Just a man taking his prehistoric pet for a stroll.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

Home to the deepest rift anywhere on Earth.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

A smoke stack so large, the Washington Monument could fit inside!

This playground sculpture of an icon from the past is dedicated to the children of the future.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The magic's in the hole!

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

A collection of colorful dinosaurs hidden in an actual rainforest.

On the Oregon coast there is a natural hole that seems to be draining the sea.

There's something big lurking beneath the surface of this tiny Oregon park.

A high-octane shrine to the greatest Texans who ever lived.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

On the Hudson resides one of the largest clocks in the world.