It's a bit the same as Airy describes and has nothing to do with the church and religion but with increased vandalism.
A bit of background is necessary. Tilburg is in the province Noord Brabant and like, the rest of the south of the Netherlands Roman Catholic. However, during the Calvinistic occupation of Holland (1650-1790) the Catholic religion was forbidden and the inhabitants had to go to secret churches about 10 kilometers southwards, over the current border with Belgium. There were two of them. After the liberation by the French and the installment of the Kingdom of the Netherlands in 1812, religion freedom was given back, and the specific church (from 1460) came back to people in 1820. At that time a new church was build as the old one, was firstly completely stripped by the Calvinist, and secondly not maintained over the centuries.
So basically we see a huge growth in population and poverty after 1820, due to the textile-industrie and the industrialization later. That also included the building of lot of churches, abbeys and convents and Tilburg was considered as the most Catholic city of the Netherlands but with a lot of diversity and focused on the wellbeing of the population through welfare and education. The decline started in the sixties. Many churches were closed. As well as the decline of the textile-industry, there is a correlation.
Due to increased vandalism and robbery of churches that started in the seventies, which also has to do with a decline a church-visiting, a number of measurements had to be made.
There were basically two options. You can remove all the art in the church and put it in a museum. (a bit out of the question in a church which is used daily) For the churches in the center, with a vast number of volunteer, they are open a regular times. Or you have to open when volunteers are there, at service time of course and at special occasions. There are during the year a number of 'Open Monument Days'.
This is the church with the Organ, the tower was built in 1460, but restructured in Baroque-style by architect C.F. van Hoof in 1890-1892.
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