Tourists are everywhere in Venice, from the footpaths alongside the canals to the small archways and side streets, pouring out into the larger piazzas with sandwiches and water bottles in tow. Venetian residents, in turn, have learned how to pick their way through the hordes or take alternative routes to avoid them entirely. But despite the constant battling and traffic, there is one side street that remains conspicuously empty at all times: Campiello Barbaro.

Urban legends abound in Italy’s floating city, but none is as poignant as the story of Ca’ Dario, the perpetually dark palazzo at 352 Campiello Barbaro, just across the Grand Canal from Palazzo Gritti.