This is the only "house of God" you have to pay admission to enter unless you are going to attend a service.
I can't help to complain each time about this hehehe.
oh well I get so many visitors each years and I have seen the cathedral from all corners already...
so I tell each time, hey I bring people here, when can I enter for free !
The only succes I ever had was that I could enter for 1/4 Euro less then usual ah! not even enough to buy a drink!