Complex sentence: The enclosed bridge is made of white limestone, has windows with stone bars, and passes over the Rio di Palazzo and connects the New Prison ("Prigioni Nuove") to the interrogation rooms in the Doge's Palace.
Split into simpler sentences: The enclosed bridge is made of white limestone and has windows with stone bars. It passes over the Rio di Palazzo and connects the New Prison (Prigioni Nuove) to the interrogation rooms in the Doge's Palace.