The Sunol Water Temple is an unusual structure locate at 505 Paloma Way in Sunol, California. Designed by Willis Polk, the 18-meter high classical pavilion is made up of twelve concrete Corinthian columns and a concrete ring girder that supports the conical wood and tile roof. Inside the temple, water originally from the Pleasanton well fields and Arroyo de la Laguna flowed into a white tiled cistern before plunging into a deeper water channel carrying water from the filter galleries to the Niles Aqueduct in Niles Canyon and across San Francisco Bay near the Dumbarton Bridge. The roof covering the cistern has paintings depicting Indian maidens carrying water vessels.