as currency. Since Austria joined the European Union in 1995, followed by the signing of the Schengen Agreement (1997) and the introduction of the Euro (2002), this special status has no longer applied. With EU accession goods from Austria had to be cleared in Germany or the import turnover tax had to be paid while German goods were free of taxes. Taxes were to be paid to the Austrian tax office in D-Mark until the introduction of the Euro. A special tariff was also applied to Swiss Post. Shipments to Austria were calculated according to the domestic tariffs of Austrian Post, those to Germany were to be freed with domestic porti of the Federal Post. In 1954, the public drinking water supply of the valley was established through creation of the Kaltes Bächle spring in municipality of Mittelberg. Economy and tourism The most important industry in the 20th century was agriculture, which currently has only a marginal importance. As of 2015, tourism plays a major role and as early as 1960 the number of overnight stays reached a million. In 2015, there were 792,026 overnight stays in summer and 816,240 during the winter of 2015/2016. Mobility in the valley is ensured with the tightly driven Walserbus, which is free of charge to tourists paying the tourist tax via ownership of the Walsercard. Winter tourism Skiing is the mainstay of winter tourism in the Kleinwalsertal, but it also has ski mountaineering and easy winter hiking. The great importance of tourism is also reflected in the winter sport infrastructure. The valley offers the opportunity to use 30 ski lifts, 6 chair lifts and 2 cable cars. The first mountain railway of the valley, the Kanzelwandbahn, was completed in Riezlern in 1955. The railway, renewed in 1989, transports winter sportsmen to above sea level. The "Kanzelwand-Fellhorn" ski area comprises 13 facilities, some of which are modern. Summer tourism In the summer, tourists come for mountain hiking. There are also two very popular climbing routes (Mindelheimer Klettersteig and Zweienland Klettersteig) on the border to the neighbouring commune area of Oberstdorf, which are mostly accessed via the Kleinwalsertal because of the shorter route and easier accessibility. Culture The Literaturfest Kleinwalsertal is a 2017 established literary festival that organises lectures, workshops, poetry slams and exhibitions. It takes place in autumn. The festival intends to bring together authors and the public. A project within the festival is