The Our Lady of the Assumption Co-Cathedral (Czech: Konkatedrála Nanebevzetí Panny Marie) or just Opava Cathedral, is the name given is a Catholic church in a town of Opava in the European country of Czech Republic. It has three naves, with two towers, built in the fourteenth century in Gothic style, where he was an older early thirteenth century Romanesque building before. In 1995 the church was declared a national monument in the Czech Republic. Since 1996 is the second seat of the bishop of Ostrava-Opava (Co-cathedral).
Establishing the Church of the Assumption in Opava it is associated with the Teutonic Knights. The construction of the church probably began shortly after 1204. Initial details of this Romanesque church are not well known. But the letter from King Wenceslas I of 12 May 1237 mentions the rectory in Opava.
After the death of Premysl Otakar II. The construction of the church stopped and resumed only after the return of his illegitimate son Nicholas I.
The church once just became the largest religious building in Opava, and the main symbol of the city.