This huge church is not really that old. It was only completed in 1905, after 54 years of construction, which included demolition of the nearly completed building when the central dome collapsed in 1868 due to poor workmanship. It is free to enter the church, but they are very aggressive with trying to get you to make a 250 forint ($1.12) "donation". It's not a donation if you have to pay it! I know it's only $1.12, but it's the point. Figure that probably more than 1,000 people per day are going through this church.