This is still very much a working church and the doors are not often open. But if you like over-the-top Catholicism, its gaudy interior is wonderful. The Krijtberg (chalk hill) church (officially Franciscus Xaveriuskerk) takes its nickname from a warehouse where Jesuit priests used to secretly conduct services after Catholicism was banned. The church, built in 1881, narrowly escaped demolition in 1973 because of falling congregations.

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