The 'Flying Pub' at the Red Bull Flugtag 2005 which occured in Slovenia, Maribor at river Drava on Sunday, 12th of June, 2005. A Flugtag (German: flight day) is an event in which competitors attempt to fly in homemade flying machines. The flying machines are usually launched off a pier about 6 metres (18 ft) high into the sea (or suitably sized reservoir of water). Most competitors enter for the entertainment value, and the flying machines rarely fly at all. The first Flugtag took place in Austria in 1991, and the activity has recently gained much popularity as a result of Red Bull sponsored events in London, Austin, Chicago, Los Angeles, New York City, San Francisco, Miami, Antwerp, Berlin, Johannesburg, New Zealand, Stockholm, Israel, Lausanne, Dubrovnik and others. Environmental groups express concern over elements of litter and pollution involved in Flugtag events. Note that "Flugtag" means "airshow" in German, even an airshow of the normal kind.