The Isartor at the Isartorplatz in Munich is one of four main gates of the medieval city wall. It served as a fortification for the defence and is the most easterly of Munich’s three remaining gothic town gates. The gate (German: Tor) is located close to the Isar and was named after the river. The Isartor is the only medieval gate in Munich which has retained its main tower and the restoration in 1833-35 by Friedrich von Gärtner is close to the original structure. The frescos, created in 1835 by Bernhard von Neher, depict the victorious return of Emperor Louis after the Battle of Mühldorf in 1322.