Love Lock

Love padlocks (also known as love locks and, in Taiwan, wish locks) are a custom by which padlocks are affixed to a fence, gate, bridge or similar public fixture by sweethearts at an increasing number of locations in the world to symbolize their everlasting love.

For more info about the tradition see http://en.wikipedia.org/wiki/Love_padlocks

Here's one that I got encraved.

Amilie