Discover the Grand Canyon, a breathtaking natural wonder in Arizona. Learn about its geology, the Colorado River's role in ...

3. Grand Canyon. Arguably one of the most famous natural wonders in the US, the Grand Canyon is a staggering chasm carved by the Colorado River over the years. Spanning 277 miles in length across ...

GENEVA — The Grand Canyon and the Great Barrier Reef are competing with 26 other spectacular natural landmarks in the final phase of the global poll to choose the “New 7 Wonders of Nature ...