The Gerald D. Hines Waterwall Park, formerly the Williams Waterwall and the Transco Waterwall, is a multi-story sculptural fountain that sits opposite the south face of Williams Tower in the Uptown District of Houston. The fountain and its surrounding park were built as an architectural amenity to the adjacent tower. Both the fountain and tower were designed by John Burgee Architects with Philip Johnson. The fountain currently operates between 10 am and 9 pm.