The most famous photo of a valley is the Sonoma valley in California (also known as a WinXP wallpaper) taken by photographer Charles O'Rear.
Valley forge
hard to say because "most famous" is subjective. some valleys are well-known: silicon valley, san Fernando valley, great rift valley, death valley, yosemite valley, central valley, nile valley, napa valley, Rhine valley
The most famous image is the image of the men putting up a flag at Iwo Jima. It was made into a sculptured monument and the photo is one of the most famous photo around the world. See link below.
valley forge
Germany produces its most famous wines from the Rhine Valley and the Moselle Valley.
Thar Desert
wall street
Tutankhmun
Ira Hayes was an American Marine that is most famous for being immortalized in the photo of him and six others raising the American Flag on the Island of Iwo Jima during World War II.
"Cabbage Kids" 1990
There are several of them, but the most famous is the Valley of Mexico, where Mexico City resides.
Foreigners first think of the Grand Canyon and Death Valley regions of the U.S.A.