Three cable cars run to the top of the Zugspitze. The first, the Tyrolean Zugspitze Cable Car, was built in 1926 by the German company Adolf Bleichert & Co and terminated on an arête below the summit at 2,805 m.a.s.l, the so-called Kammstation, before the terminus was moved to the actual summit at 2,951 m.a.s.l. in 1991. A rack railway, the Bavarian Zugspitze Railway, runs inside the northern flank of the mountain and ends on the Zugspitzplatt, from where a second cable car takes passengers to the top. The rack railway and the Eibsee Cable Car, the third cableway, transport an average of 500,000 people to the summit each year. In winter, nine ski lifts cover the ski area on the Zugspitzplatt. The weather station, opened in 1900, and the research station in the Schneefernerhaus are mainly used to conduct climate research.