A new feature has been added to the Wonder Spelen playground. City of Pella staff installed a sensory garden this week. Participants are encouraged to use all of their senses to explore the raised beds near the shelter house. This comes after the installation of a Dutch Sona Arch this spring and completion of the shelter house earlier this year. Wonder Spelen is an all-inclusive playground at Kiwanis Park in Pella, just a few blocks north of downtown.