London's famous Tower Bridge was forced to open up to let a 50-foot-tall rubber duck pass down the river Thames on Tuesday, apparently part of a publicity stunt.

The duck was part of a campaign launched by Jackpotjoy, a gambling website. The company said it used the duck to promote its "Facebook Fundation," a program that purports to give awards to people who come up with ideas on how to have more fun.

This video was published to YouTube on December 11, 2012.

(H/T: ITN)