Complex sentence: It has a veneer of small, rounded and uniform, lake washed cobbles and is one of only 14 cobblestone church buildings in New York state and 106 cobblestone structures in Monroe County.
Split into simpler sentences: It has a veneer of small, rounded and uniform lake washed cobbles. It is one of only 14 cobblestone church buildings in New York state, and of 106 cobblestone structures in Monroe County.