In Europe’s empty churches, prayer and confessions make way for drinking and dancing

The confessionals where generations of Belgians admitted their sins stood stacked in a corner of what was once Sacred Heart Church, proof the stalls — as well as the Roman Catholic house of worship — had outlived their purpose.

The building is to close down for two years while a cafe and concert stage are added, with plans to turn the church into “a new cultural hot spot in the heart of Mechelen,” almost within earshot of where Belgium’s archbishop lives. Around the corner, a former Franciscan church is now...