{"geometry":{"type":"MultiPolygon","coordinates":[[[[-0.300854,51.653259],[-0.301392,51.654004],[-0.301418,51.654011],[-0.30171,51.654472],[-0.302216,51.655481],[-0.302445,51.65592],[-0.302499,51.655989],[-0.302723,51.656676],[-0.302754,51.656793],[-0.303205,51.657747],[-0.303264,51.657831],[-0.303481,51.658101],[-0.303623,51.658258],[-0.303909,51.658605],[-0.304186,51.659236],[-0.30439,51.659667],[-0.304643,51.660138],[-0.305962,51.662683],[-0.306139,51.662728],[-0.307084,51.662474],[-0.308393,51.662086],[-0.317065,51.658606],[-0.317156,51.658552],[-0.317716,51.658147],[-0.318377,51.657754],[-0.318665,51.657623],[-0.315661,51.65433],[-0.320317,51.652566],[-0.320415,51.652488],[-0.320458,51.65251],[-0.320423,51.652543],[-0.322771,51.651634],[-0.321192,51.650889],[-0.318362,51.65212],[-0.316869,51.652684],[-0.314781,51.653424],[-0.313736,51.652772],[-0.310444,51.650682],[-0.310197,51.650553],[-0.308433,51.64944],[-0.30788,51.649712],[-0.307759,51.649611],[-0.307727,51.649615],[-0.307797,51.64958],[-0.307672,51.649481],[-0.308132,51.649254],[-0.308033,51.649202],[-0.306565,51.648628],[-0.30635,51.648502],[-0.305816,51.647891],[-0.304988,51.646924],[-0.304447,51.64709],[-0.3041,51.646674],[-0.303129,51.6469],[-0.30099,51.647365],[-0.30036,51.647495],[-0.300187,51.64718],[-0.300063,51.646989],[-0.299362,51.645801],[-0.299326,51.645705],[-0.299012,51.645621],[-0.299014,51.645615],[-0.29897,51.645609],[-0.298805,51.645699],[-0.298709,51.645704],[-0.298567,51.645689],[-0.298471,51.64567],[-0.29845,51.645818],[-0.298349,51.645818],[-0.297754,51.645734],[-0.297429,51.646711],[-0.297424,51.646771],[-0.297387,51.646899],[-0.297343,51.648126],[-0.297374,51.648743],[-0.297396,51.64903],[-0.297423,51.649169],[-0.297462,51.649245],[-0.298105,51.649973],[-0.298316,51.650222],[-0.29844,51.650386],[-0.298464,51.650402],[-0.298868,51.650882],[-0.300854,51.653259]]]]},"type":"Feature","properties":{"entry-date":"2026-06-11","start-date":"1987-06-11","end-date":"","entity":11100795,"name":"ALDENHAM HOUSE","dataset":"park-and-garden","typology":"geography","reference":"1000902","prefix":"park-and-garden","organisation-entity":16,"quality":"authoritative","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1000902","park-and-garden-grade":"II"}}