Other modern citizens of the world crowd into Three on the Bund, a 1916 Beaux Arts building that has been gutted and redesigned into a glamorously minimalist space by Michael Graves.
In 2007, the appearance of padlocks in the Italian film Ho Voglia di Te gave the tradition a boost, with reports of lovers' padlocks in Latvia, Russia, Korea, Italy and, some might say a little less glamorously, Southport.