{"nrhp_refnum":"02000615","name":"AN/FPS-35 Radar Tower and Antenna","other_names":[],"category":"building","location":{"address":"Montauk Point State Parkway","address_restricted":false,"city":"Montauk","county":"Suffolk County","state":"NY","lat":41.06263640800006,"lon":-71.87402170399997,"geom_source":"nps_gis"},"listed_date":"2002-06-04","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Military","Engineering"],"significance_levels":["national"],"summary":{"what_it_is":"A Cold War radar installation at the former Montauk Air Force Station near Montauk Point, Long Island, New York: an 85-foot, five-story poured concrete tower topped by a 70-ton steel AN/FPS-35 radar antenna, placed in service in December 1960.","why_significant":"The facility represents the air defense posture of the United States on the eastern seaboard during the Cold War. The Montauk unit was the first production AN/FPS-35 deployed and is described as the last intact example of the 12 units activated. It is nominated at the national level under military history and engineering.","narrative":"Rising on a sandy rise near Montauk Point at the eastern end of Long Island, this Cold War radar installation pairs an 85-foot poured concrete tower with a 70-ton steel antenna about 126 feet wide. The tower, square in plan with a checkerboard pattern of cast ribs, housed equipment and duty personnel across five levels. The AN/FPS-35 entered service in December 1960 at the Montauk Air Force Station, formerly the World War II Army post Camp Hero. It was the first production unit of its type and had an effective range of 200 to 250 miles, extending warning of bomber attack far over the Atlantic. It also fed data to civilian air traffic control. The station closed in 1981 when a new radar near Riverhead took over, and the equipment was abandoned in place. Vandalism stripped much of the interior and the antenna is corroded, but the tower remains sound. It is described as the last intact example of its class, which supports its national significance.","period_of_significance":"1960","architect_builder":"unknown","architectural_style":"OTHER: Radar Tower and Antenna","criteria":["A","C"],"status_note":"Radar no longer functional; antenna intact but heavily corroded, internal equipment vandalized, concrete tower in sound condition; abandoned in place after 1981 deactivation.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:53.674892-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/02000615.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/02000615/bfe95393c1-800.webp","url_1600":"https://nationalhistoricalregister.com/media/02000615/bfe95393c1-1600.webp","licence":"CC BY-SA 2.5","author":"User:Americasroof at English Wikipedia","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Montauk1.jpg\" rel=\"noopener\">User:Americasroof at English Wikipedia</a>, <a href=\"https://creativecommons.org/licenses/by-sa/2.5\" rel=\"license noopener\">CC BY-SA 2.5</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Montauk1.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75322023","wikipedia":"https://en.wikipedia.org/wiki/AN/FPS-35","wikidata":"https://www.wikidata.org/wiki/Q1698421"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/an-fps-35-radar-tower-and-antenna-02000615/"}