Karl Friedrich Schinkel was a Prussian architect, city planner, and painter who also designed furniture and stage sets. Schinkel was one of the most prominent architects of Germany and designed both neoclassical and neogothic buildings.
Schinkel's style, in his most productive period, is defined by a turn to Greek rather than Imperial Roman architecture, an attempt to turn away from the style that was linked to the recent French occupiers. (Thus, he is a noted proponent of the Greek Revival.) His most famous buildings are found in and around Berlin. These include Neue Wache (1816–1818), the Schauspielhaus (1819–1821) at the Gendarmenmarkt, which replaced the earlier theater that was destroyed by fire in 1817, and the Altes Museum (old museum, see photo) on Museum Island (1823–1830).
Later, Schinkel moved away from classicism altogether, embracing the Neo-Gothic in his Friedrichswerder Church (1824–1831). Schinkel's Bauakademie (1832–1836), his most innovative building, eschewed historicist conventions and seemed to point the way to a clean-lined "modernist" architecture that would become prominent in Germany only toward the beginning of the 20th century.