Its design is stunning with glass roof, beautiful mosaics and frescoes. If you notice people right in the middle of the Gallery acting quite wierd, don't be surprised - there is a special belief: if you want to go back to Milan, you should go below the Dome and put your right heel on the hole and twirl around while making a wish.
Althought another tradition call it Spinning on the Bull’s Balls: in the central part of floor mosaic you see a tile image of a bull who, if you look closely, is missing his private parts. They’re missing because in their place is a rather pronounced hole. The tile floor at the center of the Galleria Vittorio Emanuele II bears the insignia of four prominent northern Italian cities. The bull represents nearby Turin, and for some reason the tradition developed that spinning on the bull’s balls would give the spinner good luck. Avanti!