Castleton is a heavily commercialized neighborhood surrounding the original southern terminus of Interstate 69 on the northeast side of Indianapolis, Indiana. It is located in Lawrence and Washington townships of Marion County. Castleton Square Mall, the largest mall in Indiana, is located here. Banks, fast-food restaurants, fine dining, shopping, hospitals and related health-care businesses, as well as three and four star hotels are examples of some of the commercial establishments in this area. In addition to retail, large office parks line both sides of Interstate 69 and adjacent portions of I-465. Castleton is located relatively close to Lawrence and Keystone at the Crossing.