I learned something new about the place where Tim proposed - "Cupid's Span" by Claes Oldenburg and Coosje van Bruggen, was built in 2003 along the Rincon Park area. Resembling Cupid's bow and arrow with the arrow implanted in the ground, the statue was inspired by San Francisco's reputation as the home port of Eros, hence the stereotypical bow and arrow of Cupid.