As for the city itself, it was built by Poles over a thousand years ago,
Poles?
In 1379 a masonry master Heinrich Ungeradin with his team started construction work on the St. Mary's Church (Polish: Bazylika Mariacka, German: Marienkirche) or, properly, Basilica of the Assumption of the Blessed Virgin Mary in Gdańsk
Since 1485 the works were carried over by Hans Brandt, who supervised the erection of the main nave core. The works were finally finished after 1496 under Heinrich Haetzl.
The accounting books from 1379 – 1382 contain information on the expenditures on building materials and works carried out in the Town Hall by the bricklayer Heinrich Ungeradin. The works concerned the reconstruction and extension of the building to the west.
Heinrich and Hans, those are nice Polish names.
At the end of the 16th and beginning of the 17th century, this interior was decorated by artists of the golden age of Gdańsk arts, including such masters as: Izaak van den Block, Hans Vredeman de Vries, Willem van der Meer, Anton Moeller and Szymon Herle. Overall administration of the works was managed by Dutchman, Anton van Obberghen, who at the time held the position of town builder.
Izaak van den Block, Hans Vredeman de Vries, Willem van der Meer and Anton Moeller, all good Polish names. As is Anton van Obberghen. Oh bugger, they say he's Dutch.
The specific atmosphere of Gdańsk is also created by its bells. In 2000 a new outstanding 37-bell carillon was installed in the town hall tower The carillon was built by the Dutch bells and carillon manufacturer, Royal Eijsbouts in Asten.
* Green Gate in Gdańsk (built in 1564–1568 by Hans Kramer, a.k.a. Jan Krakowi)
* Upland Gate in Gdańsk (Willem van den Blocke finished it in 1588 and is better known by his given name: Willem van den Kowalski).
* Great Arsenal in Gdańsk (built in 1602–1606 by Anton van Obberghen, the Polish Dutchman)
* Old City Hall in Gdańsk (built in 1587–1595) probably by Anton van Obberghen, probably Polish)