Glonn is a market town in the Ebersberg district in Upper Bavaria , Germany , about 30 km 19 mi southeast of Munich. The market town of Glonn is a health spa Erholungsort , and the Glonn Valley is ringed by wooded hills, carved by the former Inn Glacier. To the south, the Alps are clearly visible on the horizon. The rivers Glonn , Kupferbach [ de ] and Schrannenbach rise within Glonn's municipal area, where the lake Kastensee is also to be found. Just inside the neighbouring community of Moosach lies the Steinsee , another lake.
Glonn is also home to three protected areas. Glonn's immediate neighbours are the communities of Baiern , Bruck , Egmating , Moosach and Oberpframmern , which together with Glonn form an administrative community Verwaltungsgemeinschaft.
Nevertheless, it is there that regional and long-distance rail service is to be found. Glonn lies roughly 30 km from the cities of Munich and Rosenheim. Early settlement in the New Stone Age is witnessed by a number of finds, among them a dwelling pit, weapons and jewellery.
The town's name derives from the Celtic description of the local river Glana — "Clear". In a donation document signed by the bishop of Freising on 21 March , Glonn is named as "Glan"; this is taken to be the earliest evidence of the town's founding. From about , it is known that there was a local lordly family called "da Glana", and in , the building register Monumenta Boica mentioned the Church of St.
Johann zu Glan. The name changed during the 16th century to "Glon" and then later to "Glonn", as it is still known now. It took a very long time for the town to build itself back up again. Only in , almost two centuries after the fire, was the new church finished and consecrated. Since , Glonn has had market rights and has had leave to hold yearly markets. Since there has been electricity , generated at the town's own power station by water power in some of the former mills.
