Completed the following sentence: In 1898, he participated in painting the "Eisernen Vorhang" (Iron Curtain) at the Vienna Volksoper for the 50th jubilee of Emperor Franz Joseph I. In 1904, he exhibited in the Austrian Pavilion at the
St. Louis World's Fair with scenes from the Imperial Royal Austrian State Railways (now at the Technisches Museum Wien). Two years later, he designed the stage for "The Queen of Sheba" by Karl Goldmark, one of the most popular operas of the late 19th century.<unk> Two years later, he designed the stage for "The Queen of Sheba" by Karl Goldmark, one of the most popular operas of the late 19th century. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️