The paddle wheels of The Sternwheelers' two signature boats churn through the blue-green waters of Mission Bay, transporting passengers back more than a century to when steamboats dominated America's rivers. Across the 100-foot-long William D. Evans, festive events with up to 600 passengers unfold under ornamental pressed-tin ceilings, handcrafted lamps, and the astronaut-crafted stars viewable on the open-air top deck. Handmade masts at the bow lead the ship's way, and its hundreds of decorative bulbs illuminate the bay at night. Bahia Belle, William D. Evans' smaller sibling, offers a more intimate space for gatherings. Its Victorian decor and architecture make way for a stained-glass skylight that beams vivid colors across its interior, resplendent with cast-iron staircases and red-velvet curtains. Weddings, banquets, and other events also take place on the boats between public cruises, each craft's rich detailing setting the tone for trips to remember.