A view of the marble dome in the city of Siena, Tuscany, Italy.

Siena is one of the best known towns in the Tuscany. When you are visiting the Tuscany you have to visit this town. A good idea is to climb the - old and not finished - wall outside the dome. From this point you have a outstanding view over the roofs of Siena and the dome itself. This picture shows the top part of the dome made of black and white marble.