It is the biggest building in Hungary and the 18th biggest church in the world. Its inner area is 5,600 m. 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, counted from the crypt.