San Francisco packs its icons into a compact, walkable stretch of the peninsula, which is why this shortlist earns priority on a tight schedule. The Golden Gate Bridge remains the essential first stop, its rust-orange towers rising through fog for one of the most photographed views in the world. A short ferry ride away, Alcatraz Island offers a haunting walk through the former federal prison and sweeping bay views most visitors never forget. For a change of pace, Golden Gate Park delivers gardens, museums, and green space in the middle of the city, while a half-day trip to Muir Woods and Sausalito pairs towering redwoods with a laid-back waterfront town just across the bridge.