What is "wallenberg"

Wallenberg is a Swedish surname which may refer to:

Wallenberg is an opera by the Estonian composer Erkki-Sven Tüür to a libretto by Lutz Hübner. The plot is developed from events in Raoul Wallenberg's personal life. The opera premiered at the Opernhaus Dortmund on May 5, 2001. It premiered at the Estonian National Opera on June 1, 2007, directed by Dmitry Bertman.