Tourism is important in Kristiansand, and the summer season is the most popular for tourists. Kristiansand Zoo and Amusement park is the largest zoo in Norway. It receives over 900,000 visitors every year. Markens Street is the main pedestrian street in downtown Kristiansand. Bystranda is a city beach located in Kvadraturen; Hamresanden beach is the longest beach in Kristiansand. Hamresanden Camping is a popular family camp during the summer season. The city hosts a free weekly concert in downtown Kristiansand in the summertime. Outside the city is the industrial park Sørlandsparken, which includes Sørlandssenteret, Norway's largest mall.