The Heard Museum is going to be one cool place to be this summer! Each Sunday in July, 11 a.m. to 5 p.m., the Heard Museum will offer free admission for all, thanks to support of the National Endowment for the Arts and Cox Charities. ($5 gate fee per person will be charged for admission to the exhibit Super Heroes: Art! Action! Adventure!, on view through Aug. 23, 2015.) On these days, children can be creative in designing their own super hero costume (while supplies last) and join in a “super” scavenger hunt to search for other super heroes in the museum, 11:30 a.m. to 3:30 p.m.