Just as you enter the old walled city of Dubrovnik there's this gargoyle head protruding from the wall... legend has it that if you stand on the stone facing the wall and take your shirt off without falling that you will be lucky in love... http://www.atlasobscura.com/places/dubrovnik-maskeron
it seems as though this isn't easy to do... and yet my oldest did it 3 times (on three separate occasions - not all in a row)... twice he put his shirt back on whilst standing there... much to the awe of on-lookers who kept asking us how long we'd been there and how long he'd been practicing...
I;m impressed by this because I tried and I couldnt stay up there. I think it helps if you're a skinny bloke to be honest... He's going to have a great life!