An elaborate sign on the roof of H.C. Andersen Slottet welcomes approximately four million visitors a year to Tivoli. The huge seasonal amusement park offers over forty attractions and rides. One of the most popular is a wooden rollercoaster called Rutschebanen. Historically, Tivoli Gardens was built in 1843 on the grounds where the Danes gallantly fought off the Swedes in a 1659 attack on Copenhagen.