Frombork Cathedral or the Archcathedral Basilica of the Assumption of the Blessed Virgin Mary and Saint Andrew (Polish: Bazylika archikatedralna Wniebowzięcia Najświętszej Maryi Panny i św.

[2] The basilica is on Poland's official national Historic Monuments List (Pomnik historii),[1] designated on 16 September 1994.

There are fragments of a Late Gothic painting, showing early Church Fathers and the crest of Bishop Nicholas Tungen in the chancel.

In 1966, a copy of the Black Madonna of Częstochowa was meant to visit Frombork to celebrate the 1000th anniversary of Christianity in Poland, but communist authorities confiscated it.

At the cathedral in Frombork, Cardinal Stefan Wyszyński instead addressed a crowd of 10,000 people where he lamented the seizure and declared the work to have been blasphemed.