[1] Landmark name Image Date designated [2] Location County Description 1 Administration Building and Research Tower, S.C. Johnson Company Administration Building and Research Tower, S.C. Johnson Company January 7, 1976 (# 74002275 ) Racine 42°42′44″N 87°47′29″W / 42.712198°N 87.791466°W / 42.712198; -87.791466 (Administration Building and Research Tower, S.C. Johnson Company ) Racine Frank Lloyd Wright -designed building. 2 Astor Fur Warehouse Astor Fur Warehouse October 9, 1960 (# 66000800 ) Prairie du Chien 43°03′11″N 91°09′36″W / 43.053062°N 91.160099°W / 43.053062; -91.160099 (Astor Fur Warehouse ) Crawford Oldest known surviving fur trade warehouse in the upper Mississippi River valley. 3 Aztalan Aztalan July 19, 1964 (# 66000022 ) Lake Mills 43°03′56″N 88°51′46″W / 43.065557°N 88.862884°W / 43.065557; -88.862884 (Aztalan ) Jefferson Prehistoric site, now a state park. 4 Harold C. Bradley House Harold C. Bradley House January 7, 1976 (# 72000047 ) Madison 43°04′11″N 89°25′16″W / 43.069785°N 89.421209°W / 43.069785; -89.421209 (Harold C. Bradley House ) Dane Prairie School home designed by Louis H. Sullivan . 5 Brisbois House Brisbois House October 9, 1960 (# 66000801 ) Prairie du Chien 43°03′08″N 91°09′35″W / 43.052336°N 91.159752°W / 43.052336; -91.159752 (Brisbois House ) Crawford Built with stone left over from Fort Crawford . 6 USS Cobia USS Cobia January 14, 1986 (# 86000087 ) Manitowoc 44°05′24″N 87°39′29″W / 44.089914°N 87.658064°W / 44.089914; -87.658064 (USS Cobia ) Manitowoc Representative of the Gato class of U.S. World War II submarines. 7 Dr. Fisk Holbrook Day House Dr. Fisk Holbrook Day House September 25, 1997 (# 97001268 ) Wauwatosa 43°03′09″N 88°00′46″W / 43.052382°N 88.012694°W / 43.052382; -88.012694 (Dr. Fisk Holbrook Day House ) Milwaukee Associated with noted geologist Fisk Holbrook Day . 8 Dousman Hotel Dousman Hotel October 9, 1960 (# 66000122 ) Prairie du Chien 43°03′07″N 91°09′35″W / 43.051949°N 91.159739°W / 43.051949; -91.159739 (Dousman Hotel ) Crawford Hotel with ties to fur traders in area. 9 Farmers' and Merchants' Union Bank Farmers' and Merchants' Union Bank January 7, 1976 (# 72000044 ) Columbus 43°20′20″N 89°00′55″W / 43.338782°N 89.015342°W / 43.338782; -89.015342 (Farmers' and Merchants' Union Bank ) Columbia One of eight "jewel box" banks designed by Louis Sullivan 10 First Unitarian Society Meetinghouse First Unitarian Society Meetinghouse August 18, 2004 (# 73000076 ) Shorewood Hills 43°04′33″N 89°26′07″W / 43.075889°N 89.435181°W / 43.075889; -89.435181 (First Unitarian Society Meetinghouse ) Dane Frank Lloyd Wright -designed church . 11 Fountain Lake Farm Fountain Lake Farm June 21, 1990 (# 90000471 ) Montello 43°41′30″N 89°23′14″W / 43.691537°N 89.387353°W / 43.691537; -89.387353 (Fountain Lake Farm ) Marquette Home of John Muir from 1849-1856. 12 Fourth Street (Meir) School Fourth Street (Meir) School December 14, 1990 (# 84003720 ) Milwaukee 43°03′04″N 87°54′53″W / 43.051180°N 87.914848°W / 43.051180; -87.914848 (Fourth Street (Meir) School ) Milwaukee Golda Meir attended school from 1906-1912. 13 Hamlin Garland House Hamlin Garland House November 11, 1971 (# 71000040 ) West Salem 43°53′57″N 91°05′07″W / 43.899075°N 91.085381°W / 43.899075; -91.085381 (Hamlin Garland House ) La Crosse Author Hamlin Garland visited and wrote here regularly. 14 Greendale Historic District Greendale Historic District October 16, 2012 (# 05000763 ) Greendale 42°56′29″N 87°59′45″W / 42.941389°N 87.995833°W / 42.941389; -87.995833 (Greendale Historic District ) Milwaukee One of three "greenbelt" towns built by the federal government. [3] 15 Thomas A. Greene Memorial Museum Thomas A. Greene Memorial Museum November 4, 1993 (# 93001615 ) Milwaukee 43°04′44″N 87°52′40″W / 43.078787°N 87.877829°W / 43.078787; -87.877829 (Thomas A. Greene Memorial Museum ) Milwaukee Former museum of geology on University of Wisconsin–Milwaukee campus. 16 Herbert and Katherine Jacobs First House Herbert and Katherine Jacobs First House July 31, 2003 (# 03001037 ) Madison 43°03′31″N 89°26′29″W / 43.058611°N 89.441389°W / 43.058611; -89.441389 (Herbert and Katherine Jacobs First House ) Dane First of more than 300 Usonian houses designed by Frank Lloyd Wright . 17 Herbert and Katherine Jacobs Second House Herbert and Katherine Jacobs Second House July 31, 2003 (# 03001038 ) Madison 43°04′26″N 89°32′05″W / 43.073889°N 89.534722°W / 43.073889; -89.534722 (Herbert and Katherine Jacobs Second House ) Dane Frank Lloyd Wright -designed home. 18 Herbert Johnson House Herbert Johnson House June 29, 1989 (# 75000076 ) Wind Point 42°46′49″N 87°46′15″W / 42.780378°N 87.770761°W / 42.780378; -87.770761 (Herbert Johnson House ) Racine Frank Lloyd Wright -designed home for the Johnson of Johnson Wax. 19 Robert M. La Follette Home Robert M. La Follette Home January 29, 1964 (# 66000020 ) Maple Bluff 43°06′54″N 89°22′20″W / 43.114889°N 89.372153°W / 43.114889; -89.372153 (Robert M. La Follette Home ) Dane A home of Robert M. La Follette 20 Aldo Leopold Shack and Farm Aldo Leopold Shack and Farm January 16, 2009 (# 78000082 ) Fairfield 43°33′46″N 89°39′33″W / 43.562778°N 89.659167°W / 43.562778; -89.659167 (Aldo Leopold Shack and Farm ) Sauk Farm associated with the writing of Sand County Almanac 21 Little White Schoolhouse Little White Schoolhouse May 30, 1974 (# 73000079 ) Ripon 43°50′31″N 88°50′11″W / 43.841943°N 88.836386°W / 43.841943; -88.836386 (Little White Schoolhouse ) Fond du Lac Birthplace of the U.S. Republican Party. 22 Man Mound Man Mound October 31, 2016 (# 16000861 ) Greenfield 43°29′19″N 89°40′15″W / 43.488611°N 89.670833°W / 43.488611; -89.670833 (Man Mound ) Sauk The only surviving earthen anthropomorphic mound in North America. [4] 23 Milton House Milton House August 6, 1998 (# 72000065 ) Milton 42°46′36″N 88°56′11″W / 42.776781°N 88.936521°W / 42.776781; -88.936521 (Milton House ) Rock Underground railway station in unusual hotel. 24 Milwaukee City Hall Milwaukee City Hall April 5, 2005 (# 73000085 ) Milwaukee 43°02′30″N 87°54′35″W / 43.0417°N 87.9098°W / 43.0417; -87.9098 (Milwaukee City Hall ) Milwaukee Germanic architecture; United States' tallest habitable building 1885-1899. 25 Namur Historic District Namur Historic District December 14, 1990 (# 87002553 ) Namur 44°44′03″N 87°39′59″W / 44.734129°N 87.666482°W / 44.734129; -87.666482 (Namur Historic District ) Door District of Belgian-American settlers, where French with a Walloon accent is still spoken. 26 North Hall, University of Wisconsin North Hall, University of Wisconsin December 21, 1965 (# 66000021 ) Madison 43°04′26″N 89°24′11″W / 43.073776°N 89.402951°W / 43.073776; -89.402951 (North Hall, University of Wisconsin ) Dane First structure on the University of Wisconsin–Madison campus. 27 Northwestern Branch, National Home for Disabled Volunteer Soldiers Northwestern Branch, National Home for Disabled Volunteer Soldiers June 17, 2011 (# 05000530 ) 5000 West National Avenue, Milwaukee 43°01′14″N 87°58′42″W / 43.020429°N 87.978195°W / 43.020429; -87.978195 (Northwestern Branch, National Home for Disabled Volunteer Soldiers ) Milwaukee 90 acres (36 ha) Milwaukee Soldiers Home (est. 1867) campus, on the Clement J. Zablocki VA Medical Center grounds. 28 Oconto Site Oconto Site January 20, 1961 (# 66000023 ) Oconto 44°53′12″N 87°54′03″W / 44.886667°N 87.900833°W / 44.886667; -87.900833 (Oconto Site ) Oconto Burial ground and artifacts dating back 5,000-6,000 years. 29 Pabst Theater Pabst Theater December 4, 1991 (# 72000063 ) Milwaukee 43°02′27″N 87°54′38″W / 43.040852°N 87.910653°W / 43.040852; -87.910653 (Pabst Theater ) Milwaukee Fourth-oldest continually operating theater in nation. 30 Ringling Brothers Circus Winter Headquarters Ringling Brothers Circus Winter Headquarters August 4, 1969 (# 69000032 ) Baraboo 43°28′01″N 89°44′07″W / 43.4669°N 89.7353°W / 43.4669; -89.7353 (Ringling Brothers Circus Winter Headquarters ) Sauk Winter headquarters of the Ringling Brothers Circus from 1884 until 1918. 31 Rock Island II Site Rock Island II Site December 11, 2023 (# 100009834 ) Rock Island 45°24′27″N 86°49′21″W / 45.4075°N 86.8225°W / 45.4075; -86.8225 (Rock Island II Site ) Door Site of camps of Native Americans, ranging from Middle Woodland around 0 CE to Oneota , to Potawatomi in the 1670s, to Ottawa in the 1760s. [5] 32 Schoonmaker Reef Schoonmaker Reef September 25, 1997 (# 97001266 ) Wauwatosa 43°02′43″N 87°59′37″W / 43.045171°N 87.993629°W / 43.045171; -87.993629 (Schoonmaker Reef ) Milwaukee Fossilized reef, among the earliest discovered in the world. 33 Second Fort Crawford Military Hospital Second Fort Crawford Military Hospital October 9, 1960 (# 66000121 ) Prairie du Chien 43°02′30″N 91°08′49″W / 43.041675°N 91.14696°W / 43.041675; -91.14696 (Second Fort Crawford Military Hospital ) Crawford Dates back to first half of 19th century, now houses medical museum. 34 Silver Mound Archeological District Silver Mound Archeological District February 17, 2006 (# 75000067 ) Hixton 44°25′36″N 90°57′35″W / 44.426628°N 90.959592°W / 44.426628; -90.959592 (Silver Mound Archeological District ) Jackson Site of early Native American settlement. 35 Soldiers' Home Reef Soldiers' Home Reef November 4, 1993 (# 93001617 ) Milwaukee 43°01′40″N 87°58′29″W / 43.027778°N 87.974722°W / 43.027778; -87.974722 (Soldiers' Home Reef ) Milwaukee Fossilized reef, among the earliest discovered in the world. 36 Taliesin Taliesin January 7, 1976 (# 73000081 ) Spring Green 43°08′30″N 90°04′15″W / 43.14153°N 90.07091°W / 43.14153; -90.07091 (Taliesin ) Iowa Frank Lloyd Wright -designed home and studio. 37 Ten Chimneys Ten Chimneys July 31, 2003 (# 03001042 ) Genesee 42°57′51″N 88°22′38″W / 42.964167°N 88.377222°W / 42.964167; -88.377222 (Ten Chimneys ) Waukesha Residence of Alfred Lunt and Lynn Fontanne . 38 Turner Hall Turner Hall November 15, 1996 (# 77000041 ) Milwaukee 43°02′37″N 87°54′56″W / 43.043611°N 87.915556°W / 43.043611; -87.915556 (Turner Hall ) Milwaukee Associated with German-American Turners. 39 University of Wisconsin Arboretum University of Wisconsin Arboretum January 13, 2021 (# 100006237 ) 1207 Seminole Hwy. 43°02′29″N 89°25′51″W / 43.0414°N 89.4307°W / 43.0414; -89.4307 (University of Wisconsin Arboretum ) Dane 40 University of Wisconsin Armory & Gymnasium University of Wisconsin Armory & Gymnasium November 4, 1993 (# 93001618 ) Madison 43°04′33″N 89°23′52″W / 43.075827°N 89.397867°W / 43.075827; -89.397867 (University of Wisconsin Armory & Gymnasium ) Dane Associated with Wisconsin Progressive Republican movement. 41 University of Wisconsin Dairy Barn University of Wisconsin Dairy Barn April 5, 2005 (# 02000600 ) Madison 43°04′28″N 89°25′06″W / 43.074547°N 89.418267°W / 43.074547; -89.418267 (University of Wisconsin Dairy Barn ) Dane Site of veterinary nutrition research. 42 University of Wisconsin Science Hall University of Wisconsin Science Hall November 4, 1993 (# 93001616 ) Madison 43°04′32″N 89°24′02″W / 43.075689°N 89.400616°W / 43.075689; -89.400616 (University of Wisconsin Science Hall ) Dane Associated with noted geology instructor Charles R. Van Hise . 43 Van Hise Rock Van Hise Rock September 25, 1997 (# 97001267 ) Rock Springs 43°29′15″N 89°54′55″W / 43.487478°N 89.915304°W / 43.487478; -89.915304 (Van Hise Rock ) Sauk Rock outcropping that Charles R. Van Hise used to create principles of structural geology . 44 Villa Louis Villa Louis October 9, 1960 (# 66000123 ) Prairie du Chien 43°03′21″N 91°09′33″W / 43.055833°N 91.159167°W / 43.055833; -91.159167 (Villa Louis ) Crawford Fur trader mansion built in 1871. 45 Wisconsin State Capitol Wisconsin State Capitol January 3, 2001 (# 70000031 ) Madison 43°04′28″N 89°23′05″W / 43.074444°N 89.384722°W / 43.074444; -89.384722 (Wisconsin State Capitol ) Dane Example of Renaissance Revival and Beaux-Arts architecture.