Gorgeously restored, historic Union Station is Denver's main transportation hub, used by RTD light-rail lines, commuter buses and Amtrak. But it's way more than that. Inside, the main hall doubles as a waiting area and lounge with leather couches and chairs, shuffleboard and free wi-fi. Swanky restaurants and coffee shops line the building along with boutiques and bars. Even one of Denver's best hotels – the Crawford – calls it home.
In summer, a farmers market (9am to 2pm Saturday) sets up outside, drawing a huge crowd. Just beyond it, a pop-up fountain comes to life, enticing kids (and kids at heart) to run and play through the urban sprinklers.