The Primatial Basilica of the Assumption of the Blessed Virgin Mary and St Adalbert (), also known as the Esztergom Basilica (), is an ecclesiastic basilica in Esztergom, Hungary, the mother church of the Archdiocese of Esztergom-Budapest, and the seat of the Catholic Church in Hungary. It is dedicated to the Assumption of Saint Mary and Saint Adalbert. It is the largest church and the tallest building in Hungary. Its inner area is 5,600 m². It is 118 m long and 49 m wide. It has a reverberation time of more than 9 seconds. Its dome, forming a semi-sphere, is situated in the middle, and it has 12 windows. It is 71.5 m high inside (which makes it one of the tallest domes in the world), with a diameter of 33.5 metres, and is 100 m high from outside, the stairs count 400 steps counted from the crypt. The altarpiece (13.5 × 6.6 metres, depicting the Assumption of the Blessed Virgin Mary, by Girolamo Michelangelo Grigoletti) is the largest painting in the world painted on a single piece of canvas. The basilica is also known for Bakócz Chapel (named after Tamás Bakócz), built by Italian masters between 1506–1507 out of red marble of Süttő, its walls adorned with Tuscan Renaissance motifs. It is the most precious remaining example of Renaissance art in Hungary. The huge crypt, built in Old Egyptian style in 1831, is today the resting place of late archbishops, among others, József Mindszenty, famous for his opposition to both Nazi and Communist rule. History The building of the present church took place on the foundation of several earlier churches. The first was built by Stephen I of Hungary between 1001–1010 (as the original Saint Adalbert church), the first cathedral in Hungary, which was burned down at the end of the 12th century. It was rebuilt, and even survived the Mongol invasion of Hungary. However, in 1304, Wenceslaus III, a probable candidate for the Hungarian throne, sacked the castle and the church. It was repaired in the following years. The archbishops of the 14th and 15th century made the church more ornate and added a huge library, the second most significant one in the country. It was ruined again under Turkish rule, in 1543. In 1820, the Archdiocese was restored and archbishop Sándor Rudnay decided to restore Esztergom's status as mother church of the country. The church maintains the