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
Valley forge
King Tut's tomb was found in the Valley of the Kings by Carter in 1921. His tomb was most famous because it was untouched by tomb robbers.
The Salinas Valley is known as the "Salad Bowl of the World", with agriculture being the hallmark industry in its famously fertile growing conditions. One of the Valley's famous residents, John Steinbeck, made Salinas Valley the setting of many of his novels.
adolf Hitler
The Valley of the Kings
Valley forge
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
Germany produces its most famous wines from the Rhine Valley and the Moselle Valley.
there are 2 valleys around the world, thotapata, and kedu kedu valley. these both are the famous valleys around the world.
Thar Desert
Tutankhmun
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.
Napa Valley is probably the most famous, but California is full of famous wineries.
It is one of the most agriculturally productive regions in the world. About 1/3 of the fruit and vegetables in the US come from the Central Valley. The Central Valley is also home to E&J Gallo, the largest winery in the world.
King Tut's tomb was found in the Valley of the Kings by Carter in 1921. His tomb was most famous because it was untouched by tomb robbers.