As you walk west from Pier-39 you will start seeing bike rental shops, gift shops and several fleets of cruise ships. Keep going until you see the famous seafood street vendors where you can get your fill of fresh crab sandwiches or clam chowder in a sourdough bread bowl. If you like your dining a little fancier, check out the restaurants right on the docks.
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At the wharf, you can also visit the SS. Jeremiah O'Brien – a fully functional Liberty class warship. Also near the wharf, you can experience the strange and unusual at the “Ripley's Believe It or Not!” museum.
After your lunch or dinner, continue to head west on Beach or Jefferson. Along the way, you will encounter a lot of street performers and arts and crafts vendors. Some of them will show off their steel drum rhythms, others will play the guitar and sing.
At Beach and Hyde you will come across Aquatic Park and one of the main Cable Car stations. You can end your walk here and take the Cable Car to another destination, or you can continue on to Ghirardelli Square home of the famous chocolates. Ghirardelli Square is also home to “Kara's Cupcakes” with a large variety of the scrumptious little treats.