The Oliwa Cathedral is the main place of worship in the city of Gdansk, located in the Oliwa district. Built between the 13th and 14th centuries, its interior is no longer the original due to the damages caused during periods of religious disputes.

The cathedral is 17.7m high, 19m wide and 107m long, making it the longest Cistercian church in the world. Inside admire elements of renaissance art, Baroque, Rococo and Classical style of great artistic value.

The arch cathedral in Oliwa is a three-nave basilica with a transept and a multisided closed presbytery, finished with an ambulatory and it is dedicated to The Holy Trinity, Blessed Virgin Mary and St Bernard.