Tazewell County Illinois (Historic Districts) has 2 places on the National Register of Historic Places including 1 place of National significance. Significant places include Peoria Lock and Dam Historic District, Delavan Commercial Historic District.
Some of the country's most noteable architects helped create the Tazewell County places including Paul LeGromwell and W.A. Corwine. Prominent architectural styles found in Tazewell Country are Early Commercial, Italianate and Queen Anne.