Bomarzo, known above all for the Parco dei Mostri or also known as Sacro Bosco, is divided into five districts that compete for the Palio di Bomarzo every year on April 25th: Dentro, Borgo, Poggio, Croci and Madonna del Piano. The origins of the village are still shrouded in mystery, as it was probably founded by unknown peoples, such as the Meoni Asians or the Rinaldonians.