I stood in Venice, on the “Bridge of Sighs”;
A Palace and a prison on each hand:
I saw from out the wave her structures rise
As from the stroke of the Enchanter’s wand:
A thousand Years their cloudy wings expand
Around me, and a dying Glory smiles
O’er the far times, when many a subject land
Looked to the wingéd Lion’s marble piles,
Where Venice sat in state, throned on her hundred isles!

Lord Byron
George Gordon, Lord Byron (1788-1824) English poet
Childe Harold’s Pilgrimage, Canto 4, st. 1 (1818)
    (Source)

This stanza was written by at least 1817-07-01. Much of the legend of the "Bridge of Sighs" (Ponte de' Sospiri) was made up or misunderstood by Byron, but created a myth that tour guides in Venice repeat to this day.