Built for the 1968 HemisFair, a World’s Fair exposition celebrating the 250th anniversary of San Antonio’s founding, this 92-acre urban space at the southern boundary of downtown has been undergoing a massive revitalization. The goal: to bring back the vibrant neighborhood that was destroyed to . . . well, build Hemisfair Park. Older structures such as the Institute of Texan Cultures and the Tower of the Americas and the Magik Theatre have long been popular with tourists, and more recently the Henry B. Gonzales Convention Center has brought even more activity to the park. In 2015 the Yanaguana Garden opened, a fanciful playscape with a wading pool and colorful beach chairs abutted by a cheerful restaurant complex, which has drawn a great many locals as well as visitors. Plans for mixed-income housing, a boutique hotel, and more retail are in the works; if these materialize, Hemisfair Park is bound to become a major hub.