Mono Lake, California – Just a few miles east of Yosemite National Park, visitors will find tufa towers rising out of the waters at Mono Lake, a body of water more than twice as salty as the ocean.
Goblin Valley State Park, Utah – Don't worry. The goblins at Goblin Valley State Park in Utah can't get you. They're really mushroom-shaped hoodoos formed by water erosion and dust blowing across the valley.
Shiprock, Navajo Nation, New Mexico – The Navajo Nation's Shiprock in New Mexico is the remnants of a volcano that erupted more than 30 million years ago. It's a sacred site to the Navajo people.
Valley of Fire State Park, Nevada – Nevada's Valley of Fire State Park plays host to remarkable rock formations created by shifting sane dunes some 150 million years ago.
Chimney Rock National Historic Site, Nebraska – Pioneers heading west along the Mormon, Oregon and California trails would appreciate seeing the landmark known as Chimney Rock National Historic Site in Nebraska. It's the result of a volcanic eruption and millions of years of erosion.
Makoshika State Park, Montana – The Yellowstone River gets much of the credit for the odd and beautiful rock formations at Makoshika State Park in Montana.
Turnip Rock, Michigan – On a clear, sunny day at Lake Huron, the not romantically-named Turnip Rock in Michigan, will overcome its name.
Devils Tower National Monument, Wyoming – Devils Tower in northeast Wyoming, the start of the national monument of the same name, rises more impressively than any skyscraper.
Garden of the Gods, Colorado – Catch a grand view of Pikes Peak from Garden of the Gods, some 1,300 acres of cliffs and boulders owned by the city of Colorado Springs, Colorado.
Monument Rocks, Kansas – The so-called Chalk Monuments, a National Natural Landmark, were formed millions of years ago on the High Plains of western Kansas.
Natural Bridge, Virginia – Revered by the Monacan as a sacred place, the Natural Bridge in Virginia was once owned by Thomas Jefferson.
Hawaii Volcanoes National Park – There are still active volcanoes at Hawaii Volcanoes National Park, demonstrating how volcanoes redefine the natural landscape.