Around the centre, i.e. Darfo, Boario Terme, Corna and Montecchio, the following areas develop in a radial pattern: Erbanno, Gorzone, Sciano, Angone, Fucine, Pellalepre, Bessimo Superiore and Capo di Largo.The four most important quarters of the town (Darfo, Boario Terme, Corna and Montecchio) are closely integrated to form a sort of quadrilateral, the centre of which is the "Isola" area, a name derived from the fact that it lies at a bend in the River Oglio.[6] The rock outcropping that forms the characteristic Monticoli is made up of red sandstone, also known as 'Pietra Simona', from the area of Simoni in Gorzone, where it has been quarried since ancient times.Marcello Ricardi wrote in Article 1 of the magazine 'L'Ogliolo', 'Owning the portal of the Simona stone house means that a family can be seen in Vicinie, either for personal wealth or political influence.The territory of the municipality of Darfo Boario Terme includes, in addition to the river Oglio, the streams Dezzo, Rovinazza, Budrio, Re, Ogliolo and the Italsider hydroelectric power stations.The dialect pronunciation is actually "Darf" and would indicate the rising of the terrain of ancient Darfo and the descent of the cones of the Rovinazza and Re streams, which brought numerous boulders and debris downstream.[24] After three centuries of renowned therapeutic and curative value, the Boario spa still retains a quality of high excellence, as certified by CerAm, the European Mineral Water Research Centre in 2010.[25] The Liberty dome, the emblem of Terme di Boario, is made of white marble, and the balcony is supported by pillars with Ionic capitals.[26] The dome is the most prestigious symbol of the Padiglione dell'Antica Fonte, and was built a century ago by the architect Amerigo Marazzi, becoming a striking example of Art Nouveau architecture.