Although it looks like a run-of-the-mill modern building from afar, if you look closely you can see that each little square on the building is actually an aperture that opens and closes to control the amount of light let in. If you visit in the summer, be sure to go on a Sunday night when dancers come out to dance the tango in front of the Although it looks like a run-of-the-mill modern building from afar, if you look closely you can see that each little square on the building is actually an aperture that opens and closes to control the amount of light let in. If you visit in the summer, be sure to go on a Sunday night when dancers come out to dance the tango in front of the structure.…see moresee less