The Shell-Haus, designed by architect Emil Fahrenkamp in the early 1930s, is a famous building from the Weimar Republic period in Berlin. Built as an office for the Shell oil company, it stands out for its wave-like limestone façade and rows of horizontal windows, giving it a smooth, flowing look. The building used a steel frame, which allowed for large windows to let in lots of natural light, making it practical as well as visually attractive.
The building was controversial at the time because its design was different from both traditional styles and the popular Bauhaus-inspired buildings. However, it became a symbol of the creativity, optimism, and focus on modern ideas that defined Weimar Republic architecture. Its impact can be seen in later architectural styles, and it is still celebrated as an important example of 20th-century modernism in Germany.