cantonal parliament has met semi-annually in Frauenfeld and Weinfelden. On 25 May 1799, Frauenfeld became a battlefield when French and Austrian forces met there. While the Austrians were victorious, the city was recaptured by the French later in the year. In 1800 the ability to move into the city was granted to anyone, and in 1807 the right to become a citizen was also opened to everyone. Between 1808 and 1834 the city walls were demolished. In 1807, the casino company was founded and in 1808 the businessman's society opened. In 1810, the Constable's association was re-established after it closed in 1798. In 1798 the Wochenblatt für den Kanton Thurgau (Weekly Journal for the canton of Thurgau) opened. In 1809 it changed its name to Thurgauer Zeitung, a paper that is still being published. Between 1813 and 1816, Bernhard Greuter, who had established a branch factory of the Islikoner Textilfärberei (Islikon textile dyeing factory) in Frauenfeld in 1805, had the moat filled in and created the promenade - a symbol of the establishment of a bourgeois public place in town. In 1919, the municipalities of Langdorf, Kurzdorf, Huben, Herten, and Horgenbach became part of Frauenfeld. In 1998, Gerlikon, Schönenhof, and Zelgli were incorporated. Geography Frauenfeld has an area, , of . Of this area, or 45.4% is used for agricultural purposes, while or 24.7% is forested. Of the rest of the land, or 27.8% is settled (buildings or roads), or 1.0% is either rivers or lakes and or 1.0% is unproductive land. Of the built-up area, industrial buildings made up 13.3% of the total area while housing and buildings made up 3.5% and transportation infrastructure made up 0.8%. Power and water infrastructure as well as other special developed areas made up 2.3% of the area while parks, green belts and sports fields made up 7.9%. Out of the forested land, 22.6% of the total land area is heavily forested and 2.1% is covered with orchards or small clusters of trees. Of the agricultural land, 43.0% is used for growing crops, while 2.4% is used for orchards or vine crops. All the water in the municipality is flowing water. The municipality is the cantonal and district capital. It is located along both banks of the Murg river. It consists of the town of Frauenfeld (made up of the old city, Ergaten-Vorstadt to the west and Obere Vorstadt to the east) and