San Francisco
In 1954, the nuclear tests in the Pacific were really attempts to kill Godzilla. He survived and vanished into the ocean. Sixty years later, two MUTOs wake up and meet in San Francisco to breed.
Godzilla comes ashore in Hawaii and follows them to California. The fight wrecks much of the city and takes down the Golden Gate Bridge. He kills the male, and the female dies when he blasts his atomic breath straight down her throat. Exhausted, Godzilla collapses in the rubble. The next day he gets up and returns to the sea while TV news calls him a savior.