The Panama-California Exposition of 1915 established San Diego as a focal point of cultural activity in California. The Spanish Colonial Revival exposition buildings, along with those from a second exposition in Balboa, house several of the great museums of San Diego. This 1,200-acre park in the central portion of the city contains the world-famous San Diego Zoo, fifteen museums, the Old Globe Theatre, sports and recreation facilities, hiking trails and some of America's most elaborate gardens. The late Richard W. Amero, longtime Balboa Park historian, wrote extensively about the park and its two expositions. His chapters on the creation of the first exposition have been edited into this essential volume on city history by Michael Kelly, president of the Committee of One Hundred. .