{"nrhp_refnum":"90001909","name":"Green Island Light","other_names":[],"category":"site","location":{"address":"Green Island in Lake Erie","address_restricted":false,"city":"Put-in-Bay","county":"Ottawa County","state":"OH","lat":41.64571560650003,"lon":-82.86583734746105,"geom_source":"nps_gis"},"listed_date":"1990-12-18","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Transportation"],"significance_levels":["local"],"summary":{"what_it_is":"A ruined light station on Green Island, a 15.8-acre rocky island in western Lake Erie near Put-in-Bay, Ottawa County, Ohio. The stone light tower with attached keeper's dwelling was built in 1864-65 under lighthouse engineer T. N. Graham.","why_significant":"The light was built to guide vessels through the South Passage around the Lake Erie Islands, replacing an 1855 lighthouse destroyed by fire. It operated until 1939 and is significant for its role in Lake Erie transportation and as an example of a nineteenth-century lighthouse type. The site also may yield archaeological information about the light station and the keeper's family life.","narrative":"Green Island Light is a ruined lighthouse complex on a small, uninhabited rocky island in western Lake Erie, about a mile west of South Bass Island. Built in 1864-65 of gray limestone, it combines a square tower, 49 feet tall, with an attached two-story keeper's dwelling. It replaced an 1855 lighthouse that burned on New Year's Eve 1863, a night remembered in island lore for the rescue of the keeper and his family. The new light first shone on July 1, 1865, and marked the South Passage through the Lake Erie Islands until 1939, when an automated light on a steel tower took over. The residence was abandoned in 1926. Today the tower retains its ten-sided iron and brass lantern without the lens, along with a stone privy and concrete walks. Foundations of vanished outbuildings remain relatively undisturbed, offering archaeological potential. The property was listed for its role in Lake Erie navigation and its lighthouse design.","period_of_significance":"1864-1939","architect_builder":"T. N. Graham, Lighthouse Engineer, 10th & 11th L.H. District","architectural_style":"Light station","criteria":["A","C"],"status_note":"Abandoned since 1939 (residence abandoned 1926); the tower and dwelling are ruins, the island is a wildlife preserve, and the site is overgrown.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:14.575797-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/90001909.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/90001909/3aeb2bd162-800.webp","url_1600":"https://nationalhistoricalregister.com/media/90001909/3aeb2bd162-1600.webp","licence":"Public domain","author":"Unknown authorUnknown author","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Green_Island_Light_(Ottawa_County,_Ohio).jpg\" rel=\"noopener\">Unknown authorUnknown author</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Green_Island_Light_(Ottawa_County,_Ohio).jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71985988","wikipedia":"https://en.wikipedia.org/wiki/Green_Island_Light_(Ohio)","wikidata":"https://www.wikidata.org/wiki/Q5602719"},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/ottawa-county/green-island-light-90001909/"}