Affiliated with Louisiana State University, the Hilltop Arboretum is located at the convergence of three indigenous ecosystems—boggy wetlands, scrubby highlands, and a meadow. The program components—exhibit areas, meeting space, gift shop, administration offices, and storage—are housed in discrete volumes captured under one long roof that protects the open walkways. The materials and forms echo the simple vernacular architecture of the Louisiana low country, such as the fishing shacks that dot the area’s bayou.