Gondolas are synonymous with Venice. Oar locks were so valuable to the gondolier that they were handed down from generation to generation.
Doorknobs became popular in Venice from 1546 onwards, when beautiful doors were designed for the Basilica di San Marco. This marked the start of fantastical designs on doors all over the city. Venetian masks have a long history of protecting the wearer's identity during promiscuous activities such as "carnival".
Ever present canals and water taxis criss-cross the city. Venice is a walking and boating city -- no need for cars or bikes here. Cross a bridge and your are in a new "sestieri" or neighborhood with its own unique feel.