Tribune Tower Facade

This is an interesting discovery I was able to make thanks to the geocaching website (it was a virtual cache)...

The Tribune Tower is known for it amazing architeture and location in Chicago. It currently houses a radio station and some other businesses. On the outside of the building, surrounding the base of the south and west walls, there is a collection of different rocks and stones that are embedded in the surface. I didn't get a picture of all the rocks, but just the ones that I had time to quickly capture. If you ever make it to Chicago, this is an interesting site to see!