The red torri gates mean only one thing, a shrine for Inari. Guarded by foxes that she uses for messengers, she's hugely popular as a goddess of prosperity. Companies will buy these red gates, as a donation, then place a smaller version in their office or factory, as a symbol of the offering to Inari. Whether or not the employees or owners believe in the mythology, it's considered good form, and that matters more than anything. In Kyoto, the major Inari shrine has a walkway lined completely with these gates, to the point it looks as if one is walking through a red hallway.