Rensselaer County New York (Historic Districts) has 18 places on the National Register of Historic Places including 1 place of National significance and 5 places of Statewide significance. Significant places include Fifth Avenue--Fulton Street Historic District, Central Troy Historic District, Mechanicville Hydroelectric Plant, Second Street Historic District and Staats, Joachim, House and Gerrit Staats Ruin.
Prehistoric cultural affiliation(s) include Native American and Dutch Family dating back to 1700.
Some of the country's most noteable architects helped create the Rensselaer County places including M.F. Cummings, Multilpe, Marcus Cummings, A.C. Rice, Stillwell-Bierce & Smith-Vaile and Henry Dudley. Prominent architectural styles found in Rensselaer Country are Greek Revival, Federal and Italianate.