Kärntner Bar or American Bar, now known as the Loos American Bar or Loos Bar is a small bar in the Carinthian No. 10, a side street of Kärntner Straße in the 1st district of Vienna Inner City . It was designed by the architect Adolf Loos and is now under monument protection . Adolf Loos designed the bar in 1908. The bar is one of the early works of architectural modernism in Vienna. The bar was restored in 1989 by Burkhardt Rukschcio.