Humboldt University main building, or Prince Henry's Palace, Under den Linden, Berlin Mitte, Berlin, Germany, Europe

humboldt university berlin mitte germany european architecture entrance historic building university campus stone gates academic institution academic heritage educational landscape cultural site urban landscape travel destination classical architecture outdoor space historical monument sky trees tourism city life academic environment study location landmark heritage site restoration public space visitor attraction decorative details architecture details stonework sightseeing entrance gate flag scholarly atmosphere courtyard cityscape cultural heritage nature landscape courtyard design classical elements neoclassical style sculptures public accessible paved path greenery national university modern city history