Limestone high quality quarried limestone, called Indiana limestone. Many famous buildings in London are built from Portland limestone. Limestone was also a very popular building block in the Middle Ages in the areas where it occurred, since it is hard, durable, and commonly occurs in easily accessible surface exposures. Many medieval churches and castles in Europe are made of limestone. Beer stone was a popular kind of limestone for medieval buildings in southern England. Limestone and (to a lesser extent) marble are reactive to acid solutions, making acid rain a significant problem to the preservation of artifacts made from this stone.
Cold Stone Creamery maintained the same concept created by Steve Herrell who founded Steve's Ice Cream. Patrons first select what flavor of ice cream they would like and then choose from a number of mix-ins to be folded into the ice cream. Mix-ins include candies, nuts, brownies and syrups. Cold Stone derives its name from the frozen granite slab that the team members use to fold mix-ins into the ice cream. In 1995, Cold Stone Creamery opened its first franchise store in Tucson, Arizona. Shortly after, a second location (first out of state) was opened in Camarillo, California. Cold Stone Creamery is now