41°26′10″N 91°05′13″W / 41.436°N 91.087°W The Muscatine Arboretum (12 acres) is an arboretum in the 85-acre Discovery Park in Muscatine, Iowa, adjacent to the Muscatine Environmental Learning Center at 3300 Cedar Street. Access is through the Learning Center or from Houser Street via Harmony Lane.