St. Mary's Basilica, or Bazylika Mariacka, is not just a church but one of the most recognizable and majestic symbols of Gdańsk and all of Poland. Officially named the Basilica of the Assumption of the Blessed Virgin Mary, it is considered one of the largest brick Gothic churches in Europe. Its monumental silhouette, built in the austere Brick Gothic style typical of the Baltic region, dominates the city's historical center and attracts travelers from all over the world.

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The scale of the basilica is truly impressive. The building is 105 meters long, reaching 66 meters in width at the transept, and the internal vaults reach a height of 29 meters. The total internal volume is estimated at nearly 190,000 cubic meters, allowing the church to accommodate up to 25,000 people at once. These figures make St. Mary's Basilica not only an architectural masterpiece but also one of the largest religious buildings in the world.
The construction of the church was a long, phased process that took 159 years and was completed in 1502. Inside the basilica are many works of art, including the famous 15th-century astronomical clock created by Hans Düringer and a copy of Hans Memling's "The Last Judgment" triptych. Today, St. Mary's Basilica is an active Catholic church where services are held regularly, but its doors are always open to tourists wishing to touch centuries of history and enjoy its austere beauty.