Since 1993, she has worked regularly with Marthaler at the Volksbühne am Rosa-Luxemburg-Platz in Berlin. From 1993 to 1999, Viebrock was head of stage design at the Deutsches Schauspielhaus Hamburg, where she worked closely again with Christoph Marthaler and Jossi Wieler (Wolken.Heim [Clouds. Home], Goethes Faust Wurzel aus 1+2 [Goethe’s Faust Square Root of 1+2]).. She designed the sets for operas that Marthaler directed at the Frankfurt Opera, the Basel Opera and the Salzburg Festival, and for Wieler’s productions of Alcina, L'Incoronazione di Poppea, Siegfried, Norma and Moses and Aaron at the Staatsoper Stuttgart.
For the latter production and for Norma, she received the “Stage Designer of 2002” award from the journal Opernwelt; in 1997, she had already received the Hessian Cultural Prize and, together with Marthaler, the Kortner Prize. In 2004 she was awarded the Berlin Theater Prize.
In 1994, 1996, and 1997, Theater heute chose Viebrock as the Set Designer of the Year and in 1994, 1996, 1997 and 1998 as the Costume Designer of the Year.
From 2001 to 2004, she has been a member of the Artistic Directorship of the Schauspielhaus Zürich. In the 2001/02 season, she designed the sets for Alibi by Meg Stuart and Schubert’s The Miller’s Beautiful Daughter, both of which were invited to the Berlin Theater Meeting.
Her own productions followed, including at the Zurich Schauspielhaus (here for the first time a musical theatre production in 2002, In Vain oder Reproduktion verboten [In Vain or Reproduction Prohibited]), HAU Berlin, Theater Basel, Opéra National de Paris, Munich Biennale, Cologne Schauspiel and the Hanover State Opera, often in collaboration with the composer Johannes Harneit and the dramaturge Malte Ubenauf.
Viebrock continues to design the sets for Christoph Marthaler’s music theatre and opera productions, including Die Fruchtfliege (The Fruit Fly), Geschichten aus dem Wiener Wald (Tales from the Vienna Woods) at the Berlin Volksbühne, Riesenbutzbach and +- 0. Ein subpolares Basislager (+-0. A Subpolar Base Camp) at theVienna Festival, Die Sache Makropoulos (The Makropoulos Case) at the Salzburg Festival, Tristan and Isolde at the Bayreuth Festival, and works at the Basel Theater and the Opéra Nationale de Paris.
Since the start of Jossi Wieler’s new artistic directorship in the 2011/2012 season, Viebrock has been back working at the Stuttgart State Opera, both as director and as set and costume designer.