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

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

The first declared National Monument in the United States.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A giant desert bird that once swung music fans at Coachella now has a home in a nearby traffic circle.

A museum dedicated to a sea that should have never been.

World's largest collection devoted to one fruit.

Version of the French Riviera destroyed by the sea.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

A Hawaiian stairway to heaven—that you can't climb.

Race through the maze, get your name on the sign.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A controversial memorial at the place where Captain Cook met his violent end.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A trading post in the North Pole where children send letters.

The king of U.S. high points towers over every other peak on the continent.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

Colorful boxes placed over the dead are left to rot and crumble.