Of what material is an enclosed bridge made from which can be viewed from the Ponte dela Paglia bridge in Venice, Italy?
Ponte della Paglia: Ponte della Paglia is a bridge in Venice, Italy. Bridge of Sighs: The Bridge of Sighs (Italian: "Ponte dei Sospiri" ) is a bridge located in Venice, northern Italy. Bridge of Sighs:  The enclosed bridge is made of white limestone, has windows with stone bars, passes over the Rio di Palazzo, and connects the New Prison ("Prigioni Nuove") to the interrogation rooms in the Doge's Palace.
i don't know