One of the sweetest ways to spend a few hours is to rent a boat and cruise around circular Stow Lake, watching painters dab at canvasses, joggers pass along the grassy shoreline, ducks waddle around waiting to be fed, and turtles sunbathe on rocks and logs. At the center of Stow Lake sits 430-foot-high Strawberry Hill, an artificial island that’s the highest point in the park. It’s a perfect picnic spot, with a bird’s-eye view of San Francisco and the bay; it also has a waterfall and a peace pagoda. At the Stow Lake Boat House, you can rent rowboats ($22/hour), pedal boats ($28/hour), or electric boats ($38/hour); there’s a snack shop, too.