Primatial Basilica of the Blessed Virgin Mary Assumed Into Heaven and St Adalbert

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 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, with a diameter of 33.5 metres, and is 100 m high from outside, the stairs count 400 steps counted from the crypt.

Source: Wikipedia