rumeli fortress, an old castle with a snow-covered view in winter, istanbul, türkiye. rumeli castle with fatih sultan mehmet

museum mosque bosphourus byzantine trees landscape bosporus tower rumeli tourism tourist destination stone wall amphitheater castle fortress cityscape medieval bosphorus fatih sultan mehmet bridge ottoman hissar roumeli hisari snowy istanbul winter background travel architecture city turkey snow europe urban sea turkish ancient history sky landmark empire rumelihisari view old snow-covered tã¼rkiye flag