An aerial view of the historic city center of Olsztyn, Poland, with its colorful buildings, prominent red roofs, and the castle, all interwoven with the city's green park spaces and a winding river

olsztyn poland historic city center colorful buildings red roofs castle green parks winding river overcast sky urban greenery architectural heritage aerial cityscape medieval structures urban planning polish city cultural landmarks st james the apostle concathedral basilica old old town olsztyn city hall ceter city