Settlements in the region of Rapperswil date back at least 5000 years. Atop the Lindenhof hill overlooking a former small village (Endingen), Rapperswil Castle was built around 1220 by the Counts of Rapperswil and is first mentioned in 1229. The town was founded when the nobility of Rapperswil moved from Altendorf across the lake to Rapperswil. The town was soon acquired by the Habsburg family who, in 1358/60, built the wooden bridge across the upper Lake Z�rich. Later, the town bought itself free, and ending Old Zurich War made an alliance with the Swiss Confederation. Because of its strategic location along important infrastructure the town grew rich because of flourishing trade. This allowed a certain degree of freedom which was ended with the formation of Swiss cantons by Napoleon. Rapperswil was at first part of the Helvetic canton of Linth. After 1803's Act of Mediation, it joined the canton of St. Gallen. The locational advantage of the place attracted the national Circus Knie who built its headquarters in Rapperswil in 1919. The circus is now also responsible for the Knie's Kinderzoo and the Circus Museum
