Sertoma Park is one of Sioux City's best-known parks, with an iconic water tower, fun playground, scenic views, lots of space to run and play, and a great pavilion. Here's your ultimate guide to this wonderful park just south of Sioux City's Morningside neighborhood and the Southern Hills Mall. What is Sertoma Park? Sertoma Park is a 42-acre city park in the southern part of Sioux City, on the same hill as Cone Park. Essentially, the eastern side of the hill is Sertoma Park, while the western side of the hill is home to Cone Park and to the Lewis & Clark Park baseball stadium where the Sioux City Explorers baseball team plays. Also nearby is Thinker Toys and the Castle Pub, both housed in a castle across the street from Sertoma Park to the South. The history of Sioux City's Sertoma Park Sioux City's Sertoma Park is one of its newer parks, dating to the turn of the millennium. In 1995, the Sioux City Sertoma Club made an agreement with th