Kitzbühel (ˈkɪtsbyːl, also: ˈkɪtsbyːəl; ˈkxɪtsb̥ɪxɪ) is a medieval town situated in the Kitzbühel Alps along the river Kitzbüheler Ache in Tyrol, Austria, about east of the state capital Innsbruck and is the administrative centre of the Kitzbühel district (Bezirk). Kitzbühel is one of the most famous and exclusive ski resorts in the world. It is frequented primarily by the international high society and has the most expensive real estate in Austria. The proximity to Munich has made it a preferred location for vacation homes among the German elite. Kitzbühel is situated in the Kitzbühel Alps between Zell am See and Innsbruck. It lies in the Leukental valley on the Kitzbüheler Ache river. The town is subdivided into the municipalities of Am Horn, Aschbachbichl, Badhaussiedlung, Bichlach, Ecking, Felseneck, Griesenau, Griesenauweg, Gundhabing, Hagstein, Hausstatt, Henntal, Jodlfeld, Kaps, Mühlau, Obernau, Schattberg, Seereith, Siedlung Frieden, Am Sonnberg, Sonnenhoffeld, Staudach, Stockerdörfl and Zephirau. The neighbouring municipalities are Aurach bei Kitzbühel, Jochberg, Kirchberg in Tirol, Oberndorf in Tirol, Reith bei Kitzbühel, St. Johann in Tirol and Fieberbrunn. Kitzbühel's historic centre is mainly car-free and hosts a large selection of luxury shops, cafés and fine dining restaurants. The first known settlers were Illyrians mining copper in the hills around Kitzbühel between 1100 and 800 BC. Around 15 BC, the Romans under Emperor Augustus extended their empire to include the Alps and established the province of Noricum. After the fall of the western Roman Empire, Bavarii settled in the Kitzbühel region around 800 and started clearing forests. In the 12th century, the name Chizbuhel is mentioned for the first time in a document belonging to the Chiemsee monastery (where it refers to a "Marquard von Chizbuhel"), whereby Chizzo relates to a Bavarian clan and Bühel refers to the location of a settlement upon a hill.