view of the bosphorus and sultan mehmed fatih bridge from the historic rumelihisari or rumelian castle in istanbul. turkey

architecture background beautiful blue bosphorus bosporus brick bridge building cable castle city cityscape country day defense fatih flag fortification fortress hissar historical istanbul landmark landscape medieval mehmed merlon outdoor place roumeli round rumelian rumelihisarı scape sky stayed stone sultan sunny tourism tower transportation travel turkey turkish urban view wall walls water watercolor