In modern times, Germany was playing an overarching role in philosophy with many famous philosophers including Leibniz, Kant, Hegel, Nietzsche and Marx, as well as Fichte, Feuerbach and Schelling. Besides, the renowned masters in musical field include Bach of classicism, Beethoven of romanticism as well as Mozart and Haydn. The Cologne Cathedral is the fourth largest cathedral in the world with a history of 600 years in building from 13th century to 19th century. The Heidelberg University, built in 1386, is the third oldest university in the world. The Berlin University is regarded as the father of modern university in that it took science and technology as major courses in early 19th century and associated them with economic production so as to promote the rapid development of German economy, as well as reformed various shortcomings of European universities.