[1] Landmark name Image Date designated[2] Location County Description 1 Aspendale Aspendale April 15, 1970 (#70000170 ) Kenton 39°13′18″N 75°41′09″W / 39.221667°N 75.685833°W / 39.221667; -75.685833 (Aspendale ) Kent House and small plantation, intact from 1771. 2 Jacob Broom House Jacob Broom House December 2, 1974 (#74000602 ) Montchanin 39°46′55″N 75°34′34″W / 39.781950°N 75.575997°W / 39.781950; -75.575997 (Jacob Broom House ) New Castle Home of constitutional convention delegate Jacob Broom, this historic house is near Brandywine Creek. It is privately owned, near the Hagley Museum and Library . 3 Corbit-Sharp House Corbit-Sharp House December 24, 1967 (#67000004 ) Odessa 39°27′15″N 75°39′24″W / 39.454167°N 75.656667°W / 39.454167; -75.656667 (Corbit-Sharp House ) New Castle House built in 1772 exemplifying influence of late Georgian architecture from Philadelphia into surrounding regions. 4 John Dickinson House John Dickinson House January 20, 1961 (#66000258 ) Dover 39°06′10″N 75°26′58″W / 39.102778°N 75.449444°W / 39.102778; -75.449444 (John Dickinson House ) Kent Delaware home where John Dickinson wrote Letters from a Farmer in Pennsylvania analyzing economic difficulties of colonial America, before the American Revolutionary War 5 Eleutherian Mills Eleutherian Mills November 13, 1966 (#66000259 ) Wilmington 39°46′50″N 75°34′30″W / 39.780556°N 75.575°W / 39.780556; -75.575 (Eleutherian Mills ) New Castle Gunpowder mills along Brandywine Creek founded by Eleuthère Irénée du Pont in 1802. It is part of the Hagley Museum . 6 Fort Christina Fort Christina November 5, 1961 (#66000260 ) Wilmington 39°44′07″N 75°32′18″W / 39.735234°N 75.538461°W / 39.735234; -75.538461 (Fort Christina ) New Castle This was the first and principal settlement of the New Sweden colony. 7 Holy Trinity (Old Swedes) Church Holy Trinity (Old Swedes) Church November 5, 1961 (#66000261 ) Wilmington 39°44′21″N 75°32′28″W / 39.739135°N 75.541174°W / 39.739135; -75.541174 (Holy Trinity (Old Swedes) Church ) New Castle The oldest surviving church from New Sweden , it hosted services in Swedish from 1698 well into the 1800s. 8 Howard High School Howard High School April 5, 2005 (#85000309 ) Wilmington 39°44′48″N 75°32′30″W / 39.746556°N 75.541556°W / 39.746556; -75.541556 (Howard High School ) New Castle An all African American high school, this school was subject of Gebhart v. Belton , a desegregation case that was combined with others in the landmark Brown vs. Board of Education decision by the United States Supreme Court . 9 Lightship LV-118 (Overfalls ) Lightship LV-118 (Overfalls ) June 14, 2011 (#89000006 ) Lewes 38°46′41″N 75°08′28″W / 38.777917°N 75.141111°W / 38.777917; -75.141111 (Lightship LV-118 (Overfalls ) ) Sussex Unique lightship was one of few to remain in service during World War II 10 Lombardy Hall Lombardy Hall December 2, 1974 (#72000292 ) Fairfax , Brandywine Hundred 39°46′53″N 75°32′43″W / 39.781485°N 75.545325°W / 39.781485; -75.545325 (Lombardy Hall ) New Castle Home of Gunning Bedford Jr. , a delegate to constitutional convention and signer of the U.S. Constitution . 11 New Castle Court House New Castle Court House November 28, 1972 (#72000285 ) New Castle 39°39′28″N 75°33′49″W / 39.657878°N 75.563680°W / 39.657878; -75.563680 (New Castle Court House ) New Castle Hosted Delaware's colonial assembly from 1704-1777. 12 New Castle Historic District New Castle Historic District December 24, 1967 (#67000003 ) New Castle 39°39′38″N 75°33′48″W / 39.660512°N 75.563312°W / 39.660512; -75.563312 (New Castle Historic District ) New Castle Capital of Delaware colony from 1651 to 1761, having well preserved architecture. 13 George Read II House George Read II House December 23, 2016 (#100000872 ) New Castle 39°39′35″N 75°33′41″W / 39.659607°N 75.561468°W / 39.659607; -75.561468 (George Read II House ) New Castle Home of George Read Jr. , the first U.S. Attorney for the District of Delaware 14 Stonum Stonum November 7, 1973 (#73000524 ) New Castle 39°39′37″N 75°34′34″W / 39.660222°N 75.576026°W / 39.660222; -75.576026 (Stonum ) New Castle Home of George Read , signer of the Declaration of Independence