This is the main square of Krakow, Poland.

Krakow, a city in southern Poland, is known for its well-preserved medieval core and Jewish quarter. Old Town – ringed by Planty Park and remnants of the city’s medieval walls – is centered on the stately, expansive Rynek Glówny (market square), site of Cloth Hall, a Renaissance-era trading outpost, and St. Mary’s Basilica, a 14th-century Gothic church.

More Info: en.wikipedia.org