California is located on the west coast of the United States and borders the Pacific Ocean. It has diverse regions including coastal, central valley, Sierra Nevada mountains, and desert. Popular landmarks include Yosemite National Park and the Golden Gate Bridge. The climate varies from hot deserts to mild coasts. Major transportation includes airports, highways, and ports that export goods like gold, silicon chips, and agricultural products. People have adapted structures to withstand earthquakes and modified the environment through aqueducts to transport water.