St. Martin and St. Nicholas Cathedral, or simply known as Bydgoszcz Cathedral, is a Catholic church built in the 15th century. It has a Gothic style, serves as a parish church and cathedral of the Diocese of Bydgoszcz. It also houses a shrine dedicated to the Virgin Mary. Its address is 10 Farna Street.
It is the most valuable architectural monument of the Old Town, standing on the Brda riverside. It has been elevated as a cathedral on March 25, 2004, by decision of then Pope John Paul II. Since November 3, 1960, the cathedral has been registered on the Kuyavian-Pomeranian heritage list.
Wikipedia https://en.wikipedia.org/wiki/Bydgoszcz_Cathedral
Coordinates 53°7'22.376" N 17°59'56.631" E