One of the more iconic and extravagant looking buildings in Helsinki is the one in the picture. Or the top of said building.
16 levels in a sort of pyramid-like shape. It rises above its neighbors. I even read a column in the magazine Image which referred it to being scary for the children (which it obviously is not!). Great effort by the architect to achieve a little different look from the typical boxy high-rise apartment blocks. Added benefit, great balconies for each and all!