Petal Pavilion by Lake Flato & Matsys

A sculptural pavilion that provides shade and collects rainwater in Texas. 

Confluence Park is located on a bluff overlooking the point where the San Pedro Creek merges with the San Antonio River. Covering three acres (1.2 hectares), the public park encompasses a classroom building, a main pavilion and three smaller pavilions. The park is overseen by the San Antonio River Foundation, which manages the watershed. The centerpiece of the park is the main pavilion, which consists of 22 concrete "petals" that form giant archways. The sculptural panels were cast on-site and lifted into place, similar to tilt-wall construction. At night, the dramatic structure is illuminated by up-lights that are discreetly embedded in the pavers.