Discovery Green is a 12 acre urban park in downtown Houston. It has a playground with water features, restaurants, stages where performances are held, a pond, a small lake with kayaking, and more. During the winter there is an ourdoor ice skating rink, and in the spring an outdoor roller rink.
For current events and happenings, you can check out their website and/or their facebook page.
It’s been a park since 2008. Here are links to some photos at various events that have taken place at Discovery Green and Avenida Houston (the street between Discovery Green and the George R Brown Convention Center) over the past few years.
I may add some more to here as I stumble across them.