The modern city of Urbisaglia, Roman Urbs Salvia, features many traces of its ancient origins. One of the most noteworthy is the theater, dated at around 23 d.C. The article presents a new, hypothetical virtual reconstruction of the structure, which was carried out based on the recent research of the geometric framework used by Roman architects in design. The principal intention of the article is to demonstrate the methodology of the study, in the case of a monument characterized by poor state of preservation
