{"nrhp_refnum":"100007614","name":"Annaburg","other_names":["Manassas Manor","Annaburg Manor","Portner House","Portner Mansion","Dhr #155-0021"],"category":"building","location":{"address":"9201 Maple St.","address_restricted":false,"city":"Manassas","county":"Manassas","state":"VA","lat":38.75595000000004,"lon":-77.46927099999994,"geom_source":"nps_gis"},"listed_date":"2022-04-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":null,"photo":null,"district":{"nrhp_refnum":"88000747","name":"Manassas Historic District","url":"https://nationalhistoricalregister.com/districts/virginia/manassas-historic-district-88000747/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":null,"wikidata":null},"indexable":false,"url":"https://nationalhistoricalregister.com/virginia/manassas/annaburg-100007614/"}