Archaeological site of Colle Bortolone at Montegrotto Terme: at the end of the 18th century, a wide and imposing Roman building (1st century B.C. – 2nd century A.D.) was discovered in the area today occupied by the Augustus Hotel; its interpretation is much discussed, and still remains uncertain. A certain number of objects dating back to pre-proto-historical age (6th – 1st millennium B.C.) also comes from this site. All we know about the Roman building of Colle Bortolone comes from an anonymous drawing made in 1780, on the occasion of the excavation commissioned by the aristocrat Giovanni Antonio Dondi dell’Orologio; further information comes from the treatises of Jacopo Filiasi (1796), Salvatore Mandruzzato (1804) and Girolamo Polcastro (1811). Furthermore, we know that around 1930 some fragments of pre-proto-historical objects (6th -1st millennium B.C.) emerged from the earth taken off from Colle Bortolone and hoarded beside the train station of that time.