Strolling through downtown SLO I came across a tourist highlight, Bubblegum Alley. Wiki says this use of the alley was recognized either after WWII or in the 1950s but at least by the 1970s it was a well-established Happening Thing.
They’ve got a pretty big college here, the California Polytechnic State University, San Luis Obispo, established in 1901, a golden oldie with 22,000 students enrolled. SLO, with a city population of around 50,000, does the 50k include the 22k? I don’t know, but in either case the population skews very young. This is evident by the downtown commercial properties being predominantly bars, restaurants, and clothes for college-age souls.