Established in 1851 after the addition of the Cincinnati, Hamilton, and Dayton Railway, Glendale incorporated in 1855 as Ohio's first planned community and one of the nation's first planned villages. Its original plan included forested greenbelts and parks, curvilinear streets meandering around established trees, large lots, and superior building standards. Glendale is designated as a National Historic Landmark community by the Department of Interior and a Certified Local Government through the Ohio Historic Preservation Office because of its persistent adherence to the plan and faithful preservation of original infrastructure. Preserved features include 59 pivotal buildings, curvilinear streets, tree canopy, stone gutters, gas streetlights, and the railroad depot.