Let's say it was any year up until 2008, and you were a tourist in Houston, staying downtown, and it was Saturday afternoon, and you had got your kids with you. (Bear with us here, we're on a roll.) What was there for you to do? The tunnels are closed weekends, as were most of the restaurants, and there are no museums worthy of note downtown. In fact, until this year, outside of the ungodly expensive Fertitt-arium, there wasn't a thing to do at all other than stroll parking lots and dodge crackheads. But now a vast prairie of little-used parking lots has been replaced by Discovery Green, a dozen or so acres of green space, bocce courts, lakes, water parks, performance spaces and restaurants. Sure, the name of the place is meh and they got a little sponsor-happy, but when you take in a concert at Discovery Green, you really feel like Houston is giving Chicago a run for its money as America's third city.