Most of the film was shot in Cinecittà studios, Rome. The brick arch where Bronson 's character flashbacks to his youth and the original lynching incident was built near a small airport fifteen miles north of Monument Valley, in Utah and two miles from U.S. Route 163 (which links Gouldings Lodge and Mexican Hat). The opening sequence with the three gunmen meeting the train was one of the sequences filmed in Spain. Shooting for scenes at Cattle Corner Station, as the location was called in the story, was scheduled for four days and was filmed at the ' ghost ' train station in the municipality of La Calahorra, county of Gaudix, near Guadix, in the Province of Granada, Spain, as were the scenes of Flagstone, and shooting for the scenes in the middle of the railway were filmed along the Guadix - Hernan Valle railway line.
once upon a time in the west where was it filmed
U.S. the Province of Granada, Spain, fifteen miles north of Monument Valley, in Utah and two miles from U.S. Route 163 Guadix - Hernan Valle railway line