Now Y Combinator Wants to Build a City Because Every Other Tech Company Is Doing ItAlissa Walker6/27/16 7:10pm234EditPromoteGo to permalinkCities are so trendy right now that every big tech company wants to build its own. Zappos did it in Downtown Vegas. Amazon is kind of doing it in a Seattle. Alphabet is probably doing it somewhere soon. And now Y Combinator wants in on the fun, too, with a plan to build some kind of alt-Silicon Valley... somewhere.