in the Summer Palace. US and Canada A few paddle steamers serve niche tourism needs as cruise boats on lakes and others, such as , still operate on the Mississippi River. In Oregon, several replica paddle steamers, which are non-steam-powered sternwheelers built in the 1980s and later, are operated for tourism purposes on the Columbia and Willamette Rivers. , built in 1912 as PS Seeandbee, was the biggest passenger-carrying paddle steamer ever built, with a capacity for 6,000 passengers; it was converted to a training aircraft carrier during World War II. , also built in 1912 with a capacity for 6,000 passengers, operated on the Hudson River from 1913 until it was sunk in an accident in 1926. One of the last paddle steamers built in the U.S. was the dredge , built in 1934 and now a National Historic Landmark. is the oldest operating Mississippi River-style steamboat and was named a National Historic Landmark in 1989. Previously named Idlewild and Avalon, Belle of Louisville is based in downtown Louisville, Kentucky. The Shelburne Museum of Vermont features the paddle steamer , a preserved Lake Champlain ferry, which was transported overland to the museum after being retired from service in 1969, and is now open for tours. The San Francisco Maritime National Historical Park is host to the Eureka, which is the largest existing wooden ship in the world. She is still afloat as a museum ship. The ferries system in Toronto, Ontario, Canada operates , a paddle steamer originally built in 1910 and restored for operation since 1976. It is the last sidewheel-propelled vessel on the Great Lakes. Sister ships Bluebell and Mayflower became garbage scows and the former's hull is now a break wall in Toronto Harbour. Germany The Elbe river Saxon Paddle Steamer Fleet in Dresden (known as "White Fleet"), Germany, is the oldest and biggest in the world, with around 700,000 passengers per year. The 1913-built Goethe was the last paddle steamer on the River Rhine. Previously the world's largest sidewheeler with a two-cylinder steam engine of , a length of and a height above water of , Goethe was converted to diesel-hydraulic power during the winter of 2008/09. Paddle wheelers are still in operation on some lakes in Southern Bavaria, such as Diessen () on Ammersee, built in 1908 and converted to a diesel system in 1975. It has been completely rebuilt in 2006. As paddle