The capitol was constructed of 43 types of stone from six countries and eight states. The exterior stone is Bethel white granite from Vermont, making the exterior dome the largest granite dome in the world. The corridor floors, walls and columns are of marble from the states of Tennessee, Missouri, Vermont, Georgia, New York, and Maryland; granite from the states of Wisconsin and Minnesota; and limestone from the states of Minnesota and Illinois. Marble from the countries of France, Italy, Greece, Algeria and Germany, and syenite from Norway are also represented. Other Wisconsin granites are located throughout the public hallways on the ground, first, and second floors.