Main Page | See live article | Alphabetical index St. Olaf's Castle, (Olavinlinna/Olofsborg) is a 15th century castle located at Savonlinna (Newcastle), Finland. It was founded by Erik Axelsson Tott in 1475 in an effort to protect Savonia and control the unstable border between the Kingdom of Sweden and its Russian adversary. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.