The Heritage Hill Historic District is one of the largest districts in the US. Its 1,300 homes date from 1843 and it is Michigan's largest and finest collection of 19th and early 20th houses. Nearly every style of American architecture from Greek Revival to Praire is represented. Self guided walking tours are available at its website, heritagehillweb.org. Its annual weekend tour of homes is the 3rd weekend in May.