Orton Hall on the campus of The Ohio State University. Home to the Geology Department, the various types of stone on the exterior of the building represent the strata of rocks commonly found in Ohio.
<a href="https://en.wikipedia.org/wiki/user:Analogue_Kid" class="extiw" title="en:user:Analogue Kid">Analogue Kid</a>
CC BY 2.5
<a href="https://en.wikipedia.org/wiki/user:Analogue_Kid" class="extiw" title="en:user:Analogue Kid">Analogue Kid</a> Self made photo