Bay Area Discovery Museum This museum features hands-on exhibits for children. Kids can climb on a fishing boat, learn to ride a unicycle, create clay animation movies. Cable Car Barn & Museum 1201 Mason/Washington (M,5) (415) 474-1887 Visitors come here to learn about one of San Francisco's most enduring icons, the cable car. Displays on the history of San Francisco's cable cars include information on how they work, how they developed, and how they are built. Hershey Factory & Visitor Center 120 South Sierra Ave., Oakdale. (209) 848-8126 Visitors enjoy free tours showing the process of making Hershey chocolate from cocoa beans to candy bars. The world of Hershey is vast, and guests get to see it all. Free samples of the end product are available. Morrison Planetarium Located at the Academy, Golden Gate Park/8th Ave. (C, 10) (415) 750-7141 Part of Golden Gate Park, this attraction is renowned for its star and sky shows. Bringing the universe to guests, the Planetarium also features a Laserium, a laser light and music show. PIER 39 Beach/Embarcadero (M, 2) (415) 981-PIER San Francisco's version of the old-fashioned boardwalk, this site features over 100 specialty shops, 10 restaurants and family attractions including Turbo Ride, the Venetian Carousel and the famous California sea lions. San Francisco Zoo Sloat/Great Hwy. (A, 13) (415) 753-7061 This world-renowned zoo is home to over 1,000 exotic, wild and domestic animals housed on dozens of acres. Guest should make a note to visit the primate center, penguin island and the children's petting zoo. Steinhart Aquarium At the Academy, GG Park/8th Ave. (C, 10) (415) 750-7145 Another part of the science offerings of Golden Gate Park, the Steinhart Aquarium holds more than 1,000 species of salt and fresh water fishes, reptiles, amphibians, marine mammals and even penguins. Visitors should look out for feeding times! UnderWater World PIER 39 (M, 2) (415) 546-2700 This World takes you right to the fish in a very unique way! UnderWater World is America's first "under the sea" aquarium experience. Visitors walk through the all-new 707,000-gallon aquarium in sea-through tunnels. Guests get to get much closer to marine life than conventional aquariums allow. Alcatraz No visit to San Francisco would be complete without a visit to America's most famous prison. No one has ever escaped from "the Rock" to tell the tale. This prison housed some of America's most feared criminals in the middle of San Francisco bay. Closed for over several decades, Alcatraz is one of San Francisco's most visited attractions. Visitors tour the island and get a taste of life "on the inside." Golden Gate Bridge This landmark is a symbol of San Francisco and the Bay Area. The Bridge is an architectural marvel, and is one of the longest suspension bridges in the world. The two towers are purposely out of alignment in order to compensate for the curvature of the earth. It's orange shape is beautiful to behold, whether it is on a clear day, or peaking above the rolling fog of the bay. Visitors should drive across it, take photographs of it, and enjoy this national landmark.