Campanile di San Marco

This particular bell tower was constructed in the early 20th century, as a replica of the 15th-century original. The former one provided a stage for Galileo Galilei's presentation of the telescope; it also served as a stage for tight rope walkers who would humor the doge with their feats during Carnevale. Today's campanile is used for sightseers desiring a Venetian panorama -- though one without canals; oddly, the canals are obscured. Just a few euros and accessible by elevator and stairs, most visitors say this is well worth your time.