Sioux Falls boasts over 500 restaurants in the city limits. It is the largest shopping center between Minneapolis and Denver. The Waterfalls at Falls Park gush over pink quartzite rock which is very rare. Pink Quartzite is the 2nd hardest rock next to the diamond. Other places to visit include the Washington Pavilion, the Carnegie Building, the Great Plains Zoo or the Sertoma Butterfly House. For the outdoor enthusiasts there is Great Bear Recreation Park where you can ski, snowboard and go tubing.