page_title: Grynau Castle
section_title: Geography
hierarchical_section_title: Grynau Castle / Geography
caption_attribution_description: English: Grynau (Grinau or Schloss Grynau) is a castle tower, situated on the Linth canal in the Swiss municipality of Tuggen in the Canton of Schwyz on the eastern slope of the Buechberg hill. It was built by the House of Rapperswil in the early 13th century AD when the tower was situated on the Tuggenersee lake shore.
context_page_description: The Grynau Castle is the name of a castle tower in the municipality of Tuggen in the canton of Schwyz, built by the House of Rapperswil in the early 13th century AD.
context_section_description: The castle respectively the tower is situated at the then only bridge over the Linth river, in the east of the former, dried up Tuggenersee lakeshore, at the southern end of the Buechberg hill in the municipality of Tuggen in the canton of Schwyz in Switzerland. Since the correction of the Linth river, the Fridgraben and the St. Gallerstrasse, a road towards Tuggen, and the Linth canal and the Grynaustrasse towards Uznach separate the property also from the former Linth river. The Linth canal respectively the Grynau tower also marks the historical border between the cantons of Schwyz and St. Gallen.
caption: The Grynau tower and barn as seen from the present Linth canal towards Obersee lake shore
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