A friend visited Seattle and we stopped by the new Starbucks Roastery and Tasting Room. It is a combination of cafe, roastery and restaurant, along with a souvenir shop. It is dedicated to roasting reserve coffees.
While sitting at a table, I glanced up above the bar and noticed a series of wooden beams that were joined together in an odd arrangement. They were clustered in different amounts.
This is an application of athroisis. Just as a group of trees will gather in varying amounts, the designer decided to do the same with this ceiling. Note the three dimensional application. The thickness of the ceiling resembles a forest, with the thicker portions similar to more trees gathered together.