ostrow tumski island with holy cross collegiate cathedral over odra river in historic old town of wroclaw in poland

architecture attraction baptist bridge cathedral chciciel christian church city cityscape collegiate cross destination evening facade gothic heritage high historic history holy icon island jan john katedra kolegiata kosciol krzyza landmark most museum odra old ostrow panorama panoramic picturesque poland polish polska river silesia slask slaskie staromiejski summer sunset swietego symbol tourism touristic tower travel tumski vacation wroclaw wroclove wyspa