This morning we have arranged a tour of this remarkably compact city, which, with its colourful mix of cultures, is known for its air of sophistication. Our tour takes in views of the magnificent span of the Golden Gate Bridge, and will include many local districts, including fashionable Nob Hill, Chinatown, Union Square and Fisherman's Wharf. This afternoon you are free to make your own explorations of the city or take one of the many excursions that are available, including a bay cruise which offers panoramic views of the city, or a trip to the infamous Alcatraz Island, where you can enjoy a fascinating close-up look at the historic federal prison. Here, visitors not only explore the remnants of the prison but also learn about the Native American occupation and early military fortifications.