{"geometry":{"type":"Point","coordinates":[1.341447,51.140292]},"type":"Feature","properties":{"entry-date":"2026-04-30","start-date":"2012-07-13","end-date":"","entity":31852538,"name":"Receiver site and Royal Observer Corps Underground Nuclear Monitoring Post, former Swingate Chain Home Radar Station","dataset":"listed-building","typology":"geography","reference":"1405533","prefix":"listed-building","organisation-entity":"16","quality":"some","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1405533","listed-building-grade":"II"}}