This may look like a latter-day version of the Bridge of Sighs, but it's actually what some American cities would call a "skyway" or "skywalk" between buildings of Venice's defunct Manifattura Tabacchi or tobacco factory on the Rio delle Burchielli, immediately south of the Piazzale Roma. 

Few tourists visit this quarter, which is a quiet residential neighborhood with a prison, patches of grass along the water, and a pleasant little hotel where we stayed before a cruise last fall, the Alloggi Marinella.