flower inner circle nature purple sun berth Binnenalster boats cruise ferry inner city mooring place to lie public traffic ship bird's view castle court courtyard Falkenstein germany Harz high inner roof stronghold tower yard circle color colour delusion icon illusion needle optical oval pictogram shiny sign symbol wheel branch decorated decorative frond garden home house palm plant pot sanctuary Spain traditional tree background damage damaged fading beauty falling apart inner remains petals raindrops rose textures wet windblown winter winter damage