{{Short description|Castle in Stettfurt, Switzerland}} thumb|Sonnenberg Castle '''Sonnenberg Castle''' is a castle in the municipality of Stettfurt of the Canton of Thurgau in Switzerland. It is a Swiss heritage site of national significance.<ref>{{cite web |url=http://www.babs.admin.ch/de/aufgabenbabs/kgs/inventar/a-objekte.html |title= Swiss inventory of cultural property of national and regional significance|date= 1 January 2017|website=A-Objects |publisher=Federal Office for Cultural Protection (BABS) |access-date= 6 September 2017}}</ref> The site is first recorded in 1242 as Sunnunbergh, when it served as the seat of a ministerial noble family; later owners included the von Landenberg family, whose medieval castle was destroyed during regional conflicts in 1407 and 1444.In 1580 the St. Gallen patrician Jost Zollikofer bought the ruined complex, and after a major fire in 1595 he had the present late‑Renaissance residence erected as a multi‑storey gabled palace surrounded by outer walls and gate structures.<ref>{{Cite web |title=Geschichte - Gemeinde Stettfurt |url=https://www.stettfurt.ch/gemeinde/portraet/geschichte.html/37 |archive-url=http://web.archive.org/web/20211228215533/https://www.stettfurt.ch/gemeinde/portraet/geschichte.html/37 |archive-date=2021-12-28 |access-date=2026-01-12 |website=www.stettfurt.ch |language=de-CH}}</ref>
In 2007 the Austrian investor Christian Baha purchased the castle and its c. 150‑hectare agricultural estate and began a long‑running restoration and conversion into a private residence; repeated stoppages to the works and a prominently visible construction crane have since attracted regional media attention.<ref>{{Cite web |title=Spuren prähistorischer Zeit - Ältestes Dorf im Thurgau entdeckt: Wieso das national wichtig ist |url=https://www.srf.ch/news/schweiz/spuren-praehistorischer-zeit-aeltestes-dorf-im-thurgau-entdeckt-wieso-das-national-wichtig-ist |access-date=2026-01-12 |website=Schweizer Radio und Fernsehen (SRF) |language=de}}</ref>
The castle is located on the slopes of the Immenberg at {{convert|649|m|ft}}.
==See also== * List of castles in Switzerland
==References== {{Reflist}}
{{Castles of Thurgau}} {{Authority control}}
{{Coord|47.52818|8.962037|region:CH_type:landmark|format=dms|display=title}}
{{DEFAULTSORT:Sonnenberg Castle}} Category:Cultural property of national significance in Thurgau Category:Castles in Thurgau
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