Like, actual boulders, or Kansas pebbles? ;-)
Actual boulders, yes. Some are smaller than ISOM standard, but they are all distinct. The 3 buildings are the KU "Earth, Energy and Environment Center." That includes geology. The grounds are filled with boulders from all over. Each boulder is marked with a sign that describes the type of rock, how old it is, and where it was found. My personal favorite is a basalt column from Inner Mongolia.
It's a rock collection, just with larger samples than usual. A geologist's dream!
It'd be nice if this guy would install some artificial boulders on our maps: