Palazzo Contarini del Bovolo

Palazzo Contarini del Bovolo is a small palace tucked down a quiet lane near Campo Manin, easy to miss until its most famous feature comes into view: an external spiral staircase, cylindrical and tiered with arched loggias, rising like a tower against the surrounding walls. The staircase gives the palace its name -- bovolo means "snail" in Venetian dialect -- and remains one of the more distinctive small sights in a city full of grander landmarks.

The staircase is a single narrow spiral with no separate descent, so groups pausing on the steps stop everyone above and below. Photographs are better taken from the loggia openings at each landing, where there is room to stand aside.

The courtyard is enclosed by occupied housing on every side. Sound carries straight up the shaft, and the site's own signage asks visitors to keep noise down for that reason.

There is no lift and no alternative route to the belvedere, so the climb is the only way up -- worth knowing before buying a ticket for anyone who would find 80 uneven stone steps difficult.

Palazzo Contarini del Bovolo is a paid, ticketed site, reached down a narrow calle near Campo Manin rather than directly off any major square -- part of its appeal is stumbling onto it away from the busier routes between St. Mark's Square and the Rialto Bridge. A visit is quick, usually well under an hour, centered on climbing the staircase itself to the rooftop terrace.