wroclaw university library biblioteka na piasku on wyspa piasek island at odra river in historic old town of wroclaw in poland

architecture attraction biblioteka city cityscape destination facade filozofia heritage high historic history island landmark library museum old palace panorama panoramic philosophy piasek piasku picturesque poland polish polska river sand silesia slask slaskie staromiejski student study summer symbol taube tourism touristic travel university uniwersytecka vacation wroclaw wroclove wyspa