BMW headquarters building in northern Munich, because of its unique appearance, is also known as the four-cylinder building, is one of Munich's landmark buildings, attracting many fans to visit and punch in. According to the construction method of this magical building, each floor is built first on the ground, and then stacked like a block to put all 22 floors together. From a distance, it looks like a huge four-cylinder engine, with various domineering side leakages (☆∀☆)