Google Cement Pillar

I found this photo of what looks like a cement pillar inside the Google Germany office. The weird part is not the pillar but the super G logo embedded in it. And I have no clue what is on top of it. So help me out folks?

I spotted this on Instagram.

This post is part of our daily Search Photo of the Day column, where we find fun and interesting photos related to the search industry and share them with our readers.