In 1972, Congress created the Golden Gate National Recreation Area, and Alcatraz Island was included as part of the new National Park Service unit. The island opened to the public in the fall of 1973 and has become one of the most popular Park Service sites. More than one million visitors from around the world visit the island each year. Today, Alcatraz tours are available year-round, and there are several different tour options to choose from. Whether you're looking for a self-guided audio tour or an in-depth guided tour, there are plenty of ways to explore this historic island.