Angel Island, in the Town of Tiburon, is a mile-square jewel set in San Francisco Bay that attracts thousands of visitors each year. Few of those who hike, bike, camp, or enjoy the spectacular vistas in this California State Park realize its diverse history. From the Spanish ships that anchored at Ayala Cove in 1775 to the 1960s cold war–era missile silos, Angel Island has endured to become one of the most popular parks in the state. Although many building were demolished, there are still countless reminders of the island's multifaceted evolution, including a quarantine station, army base, and immigration station.