Rollercoaster Day is celebrated annually on the 16th of August. The date was chosen because it commemorates the first vertical loop rollercoaster, which was patented in 1898. It is believed that the oldest rollercoasters came from the Russian Mountains, in which several hills of ice were specially constructed in what is now known as Saint Petersburg. The world’s longest rollercoaster, Steel Dragon 2000,  is in Nagashima Spa Land Japan.