St. Adalbert Church, situated in Krakow Market Square (Krakow Old Town), is over 1000 years old. This historic masonry church is open to visit.
The Medieval Museum in Stockholm is a free museum with artifacts like a 5 centuries old piece of the original wall, personal artifacts, weaponry and more.
Bricks covered the walls and ceiling–if indeed you could call the arch overhead a ceiling. They weren’t the symmetrical rectangular bricks I was used to, rather these bricks were thick and thin, long and short, pock-marked and smooth. These bricks were around six-hundred-years-old!