banner black red gold blue blue skies deutsche flagge deutsche vlag deutschland flag flag of Germany germany germany flag nation national symbol sky soccer symbol berlin building dark deutsch floodlight floodlighting illumination night parliament reichstag aeroplane aircraft flight german Great War historic history old plane triplane war world war 1 world war II ww1 wwii aged antique background black country cultural culture europe european free grime grimy grunge grunged grungy image national page paper photo photograph picture pride proud red resource retro sheet somadjinn stock stripe striped stripes texture textured vintage yellow bremen Flagge rathaus Roland town hall airplane aviation colorful colourful diesel electronics energy engine jumo junkers metal motor power technics technique technology ascend circular climb climbing corkscrew curve descend down geometry helical helix museum railing spiral staircase stairs stairway step swirl symmetry UP walk