[3] Name on the Register[4] Image Date listed[5] Location City or town Description 1 Acquinsicke Upload image February 20, 1992 (#92000070 ) Billingsley Rd. west of its junction with Maryland Route 228 38°36′30″N 77°02′14″W / 38.608333°N 77.037222°W / 38.608333; -77.037222 (Acquinsicke ) Pomfret 2 Araby Araby July 25, 1974 (#74000947 ) Southeast of Mason on Maryland Route 425 38°34′43″N 77°06′54″W / 38.578611°N 77.115°W / 38.578611; -77.115 (Araby ) Mason's Springs 3 Bryantown Historic District Bryantown Historic District March 14, 1985 (#85000590 ) Maryland Route 5 and County Route 232 38°33′11″N 76°50′39″W / 38.553056°N 76.844167°W / 38.553056; -76.844167 (Bryantown Historic District ) Bryantown 4 Cedar Grove Upload image March 2, 1979 (#79001124 ) South of La Plata off Maryland Route 6 west of Blossom Point Rd. 38°28′50″N 77°04′22″W / 38.480556°N 77.072778°W / 38.480556; -77.072778 (Cedar Grove ) La Plata 5 Ellerslie Ellerslie September 24, 1979 (#79003264 ) West of Port Tobacco on Maryland Route 6 38°30′20″N 77°02′29″W / 38.505556°N 77.041389°W / 38.505556; -77.041389 (Ellerslie ) Port Tobacco 6 The Exchange Upload image June 7, 1984 (#84001763 ) 7310 Greenland Place 38°30′54″N 76°58′23″W / 38.515°N 76.973056°W / 38.515; -76.973056 (The Exchange ) La Plata 7 Green's Inheritance Upload image December 16, 1977 (#77000692 ) Northeast of Pomfret on Maryland Route 227 38°35′19″N 77°01′13″W / 38.588611°N 77.020278°W / 38.588611; -77.020278 (Green's Inheritance ) Pomfret 8 Habre-de-Venture; Thomas Stone National Historic Site Habre-de-Venture; Thomas Stone National Historic Site October 31, 1972 (#72001595 ) 6655 Rose Hill Rd., near its junction with Maryland Routes 6 and 225 38°31′55″N 77°01′53″W / 38.531944°N 77.031389°W / 38.531944; -77.031389 (Habre-de-Venture; Thomas Stone National Historic Site ) Port Tobacco 9 The Hermitage The Hermitage July 23, 1998 (#98000886 ) Washington Ave. 38°32′02″N 76°58′52″W / 38.533889°N 76.981111°W / 38.533889; -76.981111 (The Hermitage ) La Plata 10 Johnsontown Tobacco Barn No. 2 Johnsontown Tobacco Barn No. 2 December 27, 2011 (#11000947 ) 9830 Johnsontown Rd. 38°29′12″N 76°58′17″W / 38.486547°N 76.971419°W / 38.486547; -76.971419 (Johnsontown Tobacco Barn No. 2 ) La Plata vicinitypart of the Tobacco Barns of Southern Maryland MPS 11 La Grange La Grange October 22, 1976 (#76000990 ) Maryland Route 6 , west of U.S. Route 301 38°31′27″N 76°59′28″W / 38.524167°N 76.991111°W / 38.524167; -76.991111 (La Grange ) La Plata 12 Linden Linden November 23, 1977 (#77000693 ) North of Port Tobacco on Mitchell Rd. 38°33′16″N 77°00′46″W / 38.554444°N 77.012778°W / 38.554444; -77.012778 (Linden ) Port Tobacco 13 The Lindens The Lindens April 23, 1990 (#90000607 ) Maryland Route 488 38°33′07″N 76°52′32″W / 38.551944°N 76.875556°W / 38.551944; -76.875556 (The Lindens ) Bryantown 14 Locust Grove Locust Grove July 21, 1978 (#78001454 ) West of La Plata on Maryland Route 225 38°32′32″N 77°01′22″W / 38.542222°N 77.022778°W / 38.542222; -77.022778 (Locust Grove ) La Plata 15 Mallows Bay-Widewater Historic and Archeological District Mallows Bay-Widewater Historic and Archeological District April 24, 2015 (#15000173 ) Off Charles County shoreline at Sandy Pt. 38°28′21″N 77°16′07″W / 38.4726°N 77.2686°W / 38.4726; -77.2686 (Mallows Bay-Widewater Historic and Archeological District ) Nanjemoy vicinity16 Marshall Hall Marshall Hall May 12, 1976 (#76000152 ) 5 miles north of Maryland Routes 210 and 227 38°41′06″N 77°05′55″W / 38.685°N 77.098611°W / 38.685; -77.098611 (Marshall Hall ) Bryans Road 17 Maxwell Hall Upload image July 30, 1974 (#74000949 ) East of Patuxent on Teagues Point Rd. 38°32′04″N 76°42′01″W / 38.534444°N 76.700278°W / 38.534444; -76.700278 (Maxwell Hall ) Patuxent 18 McPherson's Purchase Upload image January 3, 1985 (#85000019 ) Maryland Route 227 38°35′56″N 77°02′51″W / 38.598889°N 77.0475°W / 38.598889; -77.0475 (McPherson's Purchase ) Pomfret 19 Mount Air Upload image December 22, 1978 (#78001453 ) West of Faulkner off U.S. Route 301 38°26′12″N 76°59′50″W / 38.436667°N 76.997222°W / 38.436667; -76.997222 (Mount Air ) Faulkner 20 Mount Aventine Mount Aventine April 18, 1996 (#94001328 ) 1.8 miles southwest of Bryans Road on the northwestern side of Chapman's Landing Rd. 38°37′04″N 77°07′03″W / 38.617778°N 77.1175°W / 38.617778; -77.1175 (Mount Aventine ) Bryans Road 21 Mt. Carmel Monastery Mt. Carmel Monastery December 4, 1973 (#73000913 ) North of Port Tobacco on Mt. Carmel Rd. 38°33′21″N 77°00′01″W / 38.555833°N 77.000278°W / 38.555833; -77.000278 (Mt. Carmel Monastery ) Port Tobacco 22 Moyaone Reserve Moyaone Reserve October 7, 2020 (#100005659 ) Roughly bounded by Bryan Point Rd., Piscataway Park, Overlook Dr./Old Landing Rd., and Farmington Rd. West 38°41′27″N 77°01′25″W / 38.6909°N 77.0237°W / 38.6909; -77.0237 (Moyaone Reserve ) Bryans Road 23 Oak Grove Oak Grove November 23, 1983 (#83003777 ) Turkey Hill Rd. 38°35′10″N 76°59′10″W / 38.586111°N 76.986111°W / 38.586111; -76.986111 (Oak Grove ) La Plata 24 Oakland Upload image August 4, 1983 (#83002946 ) Maryland Route 5 38°33′30″N 76°48′40″W / 38.558333°N 76.811111°W / 38.558333; -76.811111 (Oakland ) Bryantown 25 Pleasant Hill Upload image December 8, 1997 (#97001449 ) 9205 Marshall's Corner Rd. 38°35′18″N 76°59′37″W / 38.588333°N 76.993611°W / 38.588333; -76.993611 (Pleasant Hill ) Pomfret 26 Port Tobacco Historic District Port Tobacco Historic District August 4, 1989 (#79003911 ) Off Maryland Route 6 38°30′45″N 77°01′07″W / 38.5125°N 77.018611°W / 38.5125; -77.018611 (Port Tobacco Historic District ) Port Tobacco 27 Retreat Retreat June 28, 1988 (#88000222 ) Maryland Route 484 /Poor House Rd. and Maryland Route 6 38°30′38″N 77°02′48″W / 38.510556°N 77.046667°W / 38.510556; -77.046667 (Retreat ) Port Tobacco 28 Rich Hill Rich Hill November 12, 1975 (#75000885 ) Northeast of Bel Alton on Bel Alton-Newtown Rd. 38°28′54″N 76°57′03″W / 38.481667°N 76.950833°W / 38.481667; -76.950833 (Rich Hill ) Bel Alton 29 Rose Hill Rose Hill March 30, 1973 (#73000914 ) Rose Hill Rd. 38°31′19″N 77°01′42″W / 38.522°N 77.028367°W / 38.522; -77.028367 (Rose Hill ) Port Tobacco 30 Rosemary Lawn Upload image April 16, 1992 (#92000380 ) Fire Tower Rd. 38°29′29″N 77°06′17″W / 38.491389°N 77.104722°W / 38.491389; -77.104722 (Rosemary Lawn ) Welcome 31 Sarum Sarum August 13, 1974 (#74000948 ) Southeast of Newport off Maryland Route 234 38°24′19″N 76°53′42″W / 38.405278°N 76.895°W / 38.405278; -76.895 (Sarum ) Newport 32 St. Catharine St. Catharine October 1, 1974 (#74000950 ) East of Waldorf near the junction of Maryland Routes 232 and 382 38°36′34″N 76°49′36″W / 38.609444°N 76.826667°W / 38.609444; -76.826667 (St. Catharine ) Waldorf 33 St. Mary's Roman Catholic Church, Newport St. Mary's Roman Catholic Church, Newport May 30, 1991 (#91000603 ) St. Mary's Church Rd. 38°25′53″N 76°54′23″W / 38.431389°N 76.906389°W / 38.431389; -76.906389 (St. Mary's Roman Catholic Church, Newport ) Newport 34 St. Thomas Manor St. Thomas Manor November 10, 1988 (#88002050 ) Maryland Route 427 /Chapel Point Rd. 38°27′55″N 77°01′27″W / 38.465278°N 77.024167°W / 38.465278; -77.024167 (St. Thomas Manor ) Port Tobacco 35 Spye Park Upload image October 4, 1990 (#90001523 ) Padgett Road 38°35′34″N 76°57′17″W / 38.592778°N 76.954722°W / 38.592778; -76.954722 (Spye Park ) White Plains 36 Stagg Hall Stagg Hall December 29, 1988 (#88003061 ) County Route 469/Chapel Point Rd. 38°30′42″N 77°01′11″W / 38.511667°N 77.019722°W / 38.511667; -77.019722 (Stagg Hall ) Port Tobacco 37 Thainston Thainston March 28, 1990 (#90000436 ) Mitchell Rd., north of Maryland Route 225 38°34′06″N 77°00′35″W / 38.568333°N 77.009722°W / 38.568333; -77.009722 (Thainston ) La Plata 38 Timber Neck Farm Timber Neck Farm September 6, 1979 (#79001123 ) Southeast of Faulkner Rd. 38°25′52″N 76°57′08″W / 38.431111°N 76.952222°W / 38.431111; -76.952222 (Timber Neck Farm ) Faulkner 39 Truman's Place Upload image January 20, 1988 (#87002264 ) Gallant Green Rd. 38°33′58″N 76°46′41″W / 38.566111°N 76.778056°W / 38.566111; -76.778056 (Truman's Place ) Hughesville 40 Waverley Waverley August 11, 1975 (#75000886 ) 13535 Waverly Point Road 38°20′19″N 76°57′36″W / 38.338611°N 76.96°W / 38.338611; -76.96 (Waverley ) Morgantown