Ponte dei sospiri.

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.
The view from the Bridge of Sighs was the last view of Venice that convicts saw before their imprisonment. The bridge's English name was bequeathed by Lord Byron in the 19th century as a translation from the Italian "Ponte dei sospiri",[1][2] from the suggestion that prisoners would sigh at their final view of beautiful Venice through the window before being taken down to their cells.