Massimo Brunelli / CC BY-SA 3.0 via Wikimedia CommonsA breathtaking hidden Renaissance cistern beneath the hills of Bologna, built in the 16th century to supply the Neptune Fountain – an octagonal underground chamber of arches and still water. Opened for guided visits on select dates (often via FAI); book ahead.
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Conserva di Valverde · underground Renaissance cistern · guided visits on select dates (FAI) - book ahead