USA - The West

Films to watch or re-watch before I go on my trip to the USA: Nevada, Utah, Arizona, California.
Death Valley, Las Vegas, Monument Valley, Grand Canyon, Los Angeles, Big Sur, San Francisco

Further suggestions very welcome!

Not in database:
Earthquake (1974)
The Sandpiper (1965)
San Francisco (1936)
Edge of Eternity (1959)
Hell’s Heroes (1930)