It is a red brick fortress that looks like the Chinese city of Yucheng yes, this is the city of Krakow, which used to be directly connected to the Florian Gate. It is now a museum and opens on Monday, and tickets for the Florian Gate are also available here. Several panels described the evolution of the Krakow city defense system, which as part of the city outpost defense system, had blossomed throughout Europe, but only three of the same shapes remained.