Complex sentence: RayKo Photo Center is the largest public photographic community center on the west coast occupying a 12,000 square foot building in close proximity to the San Francisco Museum of Modern Art and the Yerba Buena Center for the Arts.
Split into simpler sentences: RayKo Photo Center is the largest public photographic community center on the west coast. Rayko now occupies a 12,000 square foot building in close proximity to the San Francisco Museum of Modern Art and the Yerba Buena Center for the Arts.