What is the main setting in the novel, Tokyo Ueno Station?

The novel is set primarily in Tokyo, where Kazu lived off and on most of his adult life. Kazu explains that he came to Tokyo in 1963 in order to build athletic facilities for the 1964 Olympic Games. This was the first in a long line of jobs that keeps Kazu in Tokyo and away from his family. He returns home to Sōma after he retires, but comes back to Tokyo just a few years later when Setsuko dies, at which point he begins living in Ueno Park.