We travel to Great Sand Dunes National Park to climb the largest sand dunes in America. How can sand, blown by the wind, form such intricate and beautiful patterns as ripples and dunes? The answer ...

White Sands National Monument in New Mexico is known for its snow-white dunes. Michele Falzone/JAI/Corbis Windswept and rippled, sand dunes are some of the most magical places on the planet. Just ...

As she fled from the hunter, her many tears formed a desert oasis, and the folds of her cloak became giant sand dunes. Some believe the princess survived as a mermaid living in the oasis water.

Aug. 17, 2011 -- Sleeping Bear Dunes National Lakeshore, tucked away in the northwest corner of Michigan's Lower Peninsula, won the title of " Good Morning America 's" Most Beautiful Place in America.

As a visitor sets eyes on the brilliant pools of paradise that characterize Brazil’s Lençóis Maranhenses National Park for the first time, it wouldn’t be out of line to assume hallucination.