CHURCH OF SANTA MARIA DELLE GRAZIE AL CALCINAIO (15th century) The Church of Santa Maria delle Grazie in Calcinaio was constructed between the years of 1485 and 1513. It is the architectural work of Francesco di Giorgio Martini who designed it after having been contacted by his friend Luca Signorelli. The Renaissance style church built on a Latin cross plan with an elegant dome soars into the olive trees on the hillside above. It was the church of the guild of the shoe makers, who had their vats of lime to be used for tanning leather, protected by an image of the Madonna painted by Bernardo Covatti, which is now displayed on the main altar of the church