In terms of architectural history, the 20th century is focused predominantly on Modernism. Very little interest has been shown in other significant ideas from this period, especially when they remained a hand-drawn utopia. This was also the fate of architect Otto Kohtz (1880--1956), who developed monumental visions for high-rise buildings and urban environments parallel to his day-to-day professional practice throughout his entire life. Kohtz consistently pursued his high-rise fantasies and bequeathed a wealth of drawings, which this publication collects and annotates for the first time. In the context of his realized buildings (UFA Babelsberg, Scherl House Berlin), the book succeeds in providing a new perspective on Otto Kohtz' urban developmental concepts and architectural intentions, enabling a fresh evaluation of his importance for 20th century architectural history.