art background branch curves design floral flourish graphics gray leaf nature plant red stripes tree vector wallpaper winter yellow black flower spiral swirl wave white circle circles color geometric geometrical graphic illustration lines math modern pattern repetition rings shape shapes spiro abstract Asian blue curve japan retro sea sky sun sunlight sunshine water waves bronze egypt isolated lantern metal rustical spirals street lamp street light streetlight swirls versus sky spring summer bank canada current curved evening flow forest landscape light mountain natural river shadow shallows shore arch architecture building canal espana fountain lamp lamppost landmark magnificent pillar Plaza de España Seville Spain terracotta