Crypt underneath the Royal Cathedral…really the coolest part was the columns.
And also this was hands-down the most blatantly money-grubbing church I’ve ever been to. It was a euro just to get in, and everywhere you turned they were asking for more money, with candles and rosaries and knick-knacks. The employee also told us that the way you get to be buried there is by giving all your money after you die to that church. And there’s hundreds of people buried there, many of them countesses and dukes, etc. My favorite was a sign by one of the tombs, telling us that if we wanted the lights to be turned on so that we could see the artwork and sculptures, we had to pay for that too.