The dark clock with golden numbers and the bell of the 1500s belfry are complemented by another timekeeping device.
Every day at 12 p.m., a siren noise resounds across the streets of the city center.
To the tourists it may be peculiar to hear the sharp sound, normally related to emergency situations, coming from the belltower; but the locals rely on the siren to realize that lunch-break is nearing.
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