The Bridge of Sighs (Italian: Ponte dei Sospiri) is a small bridge in Venice, northern Italy. The bridge has walls and a roof. It is made of white limestone and has windows with stone bars. It passes over the Rio di Palazzo and connects the old prisons to the interrogation rooms in the Doge's Palace. It was designed by Antoni Contino (whose uncle Antonio da Ponte had designed the Rialto Bridge), and built in 1602.