The Basilica Cathedral of St. Mary of the Assumption is a large Gothic building situated in the Polish city of Włocławek located near to the Vistula River. Construction on the cathedral began in the 1340s, and it was consecrated in 1411. It was still under construction in the 15th and at the beginning of the 16th century, until its completion in 1526. It is one of the greatest treasure troves of funerary art in Poland next to the cathedrals in Gniezno, Poznań and Kraków.

Józef Mehoffer was a Polish painter and decorative artist, one of the leading artists of the Young Poland movement and one of the most revered Polish artists of his time.