What happens if you put 250 tonnes of ice, 54 ice and snow artists and empty space in Madrid together?
Take a look at the video on this page to find out.
If you fancy going there, you will also find an ice rink and a couple of giant nativity scenes, amongst other things. The area is probably the heart of Madrid's business district and has a number of shopping centres nearby.
Azca (Metro: Nuevos Ministerios)