Information on the island can be found on the National Park Service's website.
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Bay tours under the Golden Gate Bridge and private charters and parties with full catering.
A nice place and the right size for kids, with an underwater tunnel, where the fish swim above you as you gaze at them, and ponds where you can touch various live marine animals. It's a perfectly decent aquarium, but many locals would recommend you save your money for the fantastic California Academy of Sciences in Golden Gate Park.
This is an exciting bungee/trampoline combination, suitable for all ages, which allows you to experiment with the dare-devil acrobat inside of you. It's possible to reach heights of up to 20 feet in the air.
In addition to their bay cruise from Pier 39, Blue & Gold Fleet offers ferries from Pier 41 across the bay to Sausalito, Tiburon, Angel Island, and Alameda/Oakland. Blue & Gold Fleet also runs a "RocketBoat", a high-speed cruise of the bay in a sleek red boat.
A 45-acre pier-complex featuring 100 specialty stores, 12 full-service restaurants, theater, cruises, live entertainment, and more.
A fun house maze where you can lose yourself in infinite hallways and dead-ends, complete with psychedelic lighting.