[3] Name on the Register[4] Image Date listed[5] Location City or town Description 1 Alden Bridge Alden Bridge May 15, 1998 (#98000517 ) Main St. over the Iowa River 42°31′16″N 93°22′32″W / 42.521111°N 93.375556°W / 42.521111; -93.375556 (Alden Bridge ) Alden 2 Alden Public Library Alden Public Library March 17, 1981 (#81000241 ) 1012 Water St. 42°31′07″N 93°22′01″W / 42.518611°N 93.366944°W / 42.518611; -93.366944 (Alden Public Library ) Alden 3 Carnegie-Ellsworth Public Library Carnegie-Ellsworth Public Library May 23, 1983 (#83000363 ) 520 Rocksylvania Ave. 42°31′18″N 93°15′50″W / 42.521722°N 93.263833°W / 42.521722; -93.263833 (Carnegie-Ellsworth Public Library ) Iowa Falls 4 Civilian Conservation Corps-Prisoner of War Recreation Hall Civilian Conservation Corps-Prisoner of War Recreation Hall January 27, 2012 (#11001056 ) 301 11th Ave. 42°21′45″N 93°05′11″W / 42.362511°N 93.086336°W / 42.362511; -93.086336 (Civilian Conservation Corps-Prisoner of War Recreation Hall ) Eldora 5 Edgewood School of Domestic Arts Edgewood School of Domestic Arts April 19, 1979 (#79000897 ) 719 River St. 42°31′26″N 93°16′06″W / 42.523861°N 93.268333°W / 42.523861; -93.268333 (Edgewood School of Domestic Arts ) Iowa Falls 6 Eldora Downtown Historic District Eldora Downtown Historic District May 12, 2009 (#09000297 ) Approximately ten blocks in downtown Eldora around the courthouse square 42°21′37″N 93°05′56″W / 42.360197°N 93.098917°W / 42.360197; -93.098917 (Eldora Downtown Historic District ) Eldora 7 Eldora Public Library Eldora Public Library May 23, 1983 (#83000364 ) 1219 14th Ave. 42°21′35″N 93°05′55″W / 42.359611°N 93.09875°W / 42.359611; -93.09875 (Eldora Public Library ) Eldora 8 Ellsworth-Jones Building Ellsworth-Jones Building October 1, 1993 (#93000959 ) 511 Washington Ave. 42°31′10″N 93°15′49″W / 42.519389°N 93.263528°W / 42.519389; -93.263528 (Ellsworth-Jones Building ) Iowa Falls 9 Estes Park Band Shell Estes Park Band Shell October 1, 1993 (#93000960 ) Estes Park 42°31′15″N 93°15′53″W / 42.520722°N 93.264806°W / 42.520722; -93.264806 (Estes Park Band Shell ) Iowa Falls 10 First Congregational Church First Congregational Church December 4, 1996 (#96001372 ) 1209 12th St. 42°21′41″N 93°05′52″W / 42.361389°N 93.097778°W / 42.361389; -93.097778 (First Congregational Church ) Eldora 11 First National Bank First National Bank October 1, 1993 (#93000958 ) 601 Washington Ave. 42°31′10″N 93°15′52″W / 42.519444°N 93.264361°W / 42.519444; -93.264361 (First National Bank ) Iowa Falls 12 Folkert Mound Group Folkert Mound Group March 17, 2009 (#09000126 ) Address Restricted Steamboat Rock 13 Hardin County Courthouse Hardin County Courthouse July 2, 1981 (#81000242 ) Edgington Ave. 42°21′32″N 93°05′45″W / 42.358889°N 93.095833°W / 42.358889; -93.095833 (Hardin County Courthouse ) Eldora 14 Hardin County Home Historic District Hardin County Home Historic District May 24, 2010 (#10000275 ) 28483 County Road D41 42°23′25″N 93°08′18″W / 42.390158°N 93.138206°W / 42.390158; -93.138206 (Hardin County Home Historic District ) Eldora 15 Honey Creek Friends' Meetinghouse Honey Creek Friends' Meetinghouse February 8, 1980 (#80001452 ) Southwest of New Providence 42°15′02″N 93°11′14″W / 42.250556°N 93.187222°W / 42.250556; -93.187222 (Honey Creek Friends' Meetinghouse ) New Providence 16 Illinois Central Combination Depot-Ackley Illinois Central Combination Depot-Ackley September 6, 1990 (#90001303 ) North of Railroad St., between State and Mitchell Sts. 42°33′19″N 93°03′08″W / 42.555139°N 93.052306°W / 42.555139; -93.052306 (Illinois Central Combination Depot-Ackley ) Ackley 17 Iowa Falls Bridge Iowa Falls Bridge May 15, 1998 (#98000516 ) U.S. Route 65 over the Iowa River 42°31′06″N 93°15′46″W / 42.518333°N 93.262778°W / 42.518333; -93.262778 (Iowa Falls Bridge ) Iowa Falls Demolished in 2010. 18 Iowa Falls Union Depot Iowa Falls Union Depot September 6, 1990 (#90001305 ) E. Rocksylvania Ave. and Depot St. 42°31′16″N 93°15′23″W / 42.521222°N 93.2565°W / 42.521222; -93.2565 (Iowa Falls Union Depot ) Iowa Falls 19 Glenn and Nell Kurtz Lustron Home and Garage Glenn and Nell Kurtz Lustron Home and Garage December 2, 2014 (#14000971 ) 2017 Washington Ave. 42°31′11″N 93°16′58″W / 42.5196°N 93.2828°W / 42.5196; -93.2828 (Glenn and Nell Kurtz Lustron Home and Garage ) Iowa Falls 20 McClanahan Block McClanahan Block October 1, 1993 (#93000956 ) 613 Washington Ave. 42°31′10″N 93°15′53″W / 42.519389°N 93.264806°W / 42.519389; -93.264806 (McClanahan Block ) Iowa Falls 21 Metropolitan Opera House Metropolitan Opera House February 20, 1975 (#75000690 ) 515 Washington St. 42°30′55″N 93°16′08″W / 42.515278°N 93.268889°W / 42.515278; -93.268889 (Metropolitan Opera House ) Iowa Falls 22 Mills Tower Historic District Mills Tower Historic District September 6, 1990 (#90001304 ) E. Rocksylvania Ave., 1/3 mile east of Freight House 42°31′22″N 93°14′55″W / 42.522778°N 93.248611°W / 42.522778; -93.248611 (Mills Tower Historic District ) Iowa Falls 23 New Providence Building Association Stores New Providence Building Association Stores March 15, 2016 (#16000081 ) 401–405 W. Main Street Dr. 42°16′54″N 93°10′19″W / 42.281555°N 93.171991°W / 42.281555; -93.171991 (New Providence Building Association Stores ) New Providence 24 New Providence School Gymnasium New Providence School Gymnasium October 22, 1996 (#96000698 ) 106 N. Main St. 42°17′07″N 93°10′22″W / 42.285139°N 93.172722°W / 42.285139; -93.172722 (New Providence School Gymnasium ) New Providence 25 Princess-Sweet Shop Princess-Sweet Shop October 1, 1993 (#93000957 ) 607 Washington Ave. 42°31′10″N 93°15′52″W / 42.519444°N 93.264444°W / 42.519444; -93.264444 (Princess-Sweet Shop ) Iowa Falls 26 River Street Bridge River Street Bridge May 15, 1998 (#98000526 ) River St. over the Iowa River 42°31′11″N 93°16′05″W / 42.519722°N 93.268056°W / 42.519722; -93.268056 (River Street Bridge ) Iowa Falls 27 St. Matthew's by the Bridge Episcopal Church St. Matthew's by the Bridge Episcopal Church October 1, 1993 (#93000961 ) Junction of Oak and Railroad Sts. 42°31′06″N 93°15′47″W / 42.518333°N 93.263056°W / 42.518333; -93.263056 (St. Matthew's by the Bridge Episcopal Church ) Iowa Falls 28 Sentinel Block Sentinel Block October 1, 1993 (#93000962 ) 702 Washington Ave. 42°31′12″N 93°15′56″W / 42.519917°N 93.265639°W / 42.519917; -93.265639 (Sentinel Block ) Iowa Falls 29 Slayton Farms-Round Barn Slayton Farms-Round Barn July 7, 1999 (#99000739 ) 20478 135th St. 42°30′52″N 93°17′26″W / 42.514444°N 93.290556°W / 42.514444; -93.290556 (Slayton Farms-Round Barn ) Iowa Falls 30 Steamboat Rock Consolidated Schools Building Steamboat Rock Consolidated Schools Building March 31, 2004 (#04000243 ) 306 W. Market St. 42°24′29″N 93°03′55″W / 42.408056°N 93.06516°W / 42.408056; -93.06516 (Steamboat Rock Consolidated Schools Building ) Steamboat Rock 31 Union Cemetery Gardener's Cottage Union Cemetery Gardener's Cottage January 24, 2002 (#01001486 ) Union Cemetery 42°31′40″N 93°16′13″W / 42.527694°N 93.270278°W / 42.527694; -93.270278 (Union Cemetery Gardener's Cottage ) Iowa Falls 32 US Post Office-Iowa Falls US Post Office-Iowa Falls January 5, 1994 (#93000955 ) 401 Main St. 42°31′15″N 93°15′56″W / 42.520833°N 93.265556°W / 42.520833; -93.265556 (US Post Office-Iowa Falls ) Iowa Falls 33 W.R.C. Hall W.R.C. Hall October 1, 1993 (#93000963 ) 710 Washington Ave. 42°31′11″N 93°15′57″W / 42.519722°N 93.265833°W / 42.519722; -93.265833 (W.R.C. Hall ) Iowa Falls 34 Washington Avenue Bridge Washington Avenue Bridge May 15, 1998 (#98000518 ) U.S. Route 20 over the Iowa River 42°31′11″N 93°16′16″W / 42.519722°N 93.271111°W / 42.519722; -93.271111 (Washington Avenue Bridge ) Iowa Falls 35 Washington Avenue Commercial Historic District Washington Avenue Commercial Historic District October 31, 2012 (#12000889 ) 401-714 Washington Ave., the 300 block of Stephens St. and the 200 and 300 blocks of Oak St. 42°31′11″N 93°15′51″W / 42.51964°N 93.264166°W / 42.51964; -93.264166 (Washington Avenue Commercial Historic District ) Iowa Falls 
