This is a Z shaped building and I'm focused into one of the corners of the building that has mirrored glass windows. For a better understanding of what you are looking at:
The portion of the Z shaped building you are looking at is a corner. Since I'm looking up on a pretty acute angle the building's upper floors are seen in the reflection and the right side of the "V" or corner is reflecting the left side and vice verse! Wild... I know. The vertical and full size versions make this more obvious.