Trajan’s Market, at the Museo dei Fori Imperiali, Rome.

“Trajan’s Market was probably built in 100-110 AD by Apollodorus of Damascus, an architect who always followed Trajan in his adventures and to whom Trajan entrusted the planning of his Forum, and inaugurated in 113 AD. During the Middle Ages the complex was transformed by adding floor levels, still visible today, and defensive elements such as the Torre delle Milizie, the ‘militia tower’ built in 1200. A convent, which was later built in this area, was demolished at the beginning of the twentieth century to restore Trajan’s Markets to the city of Rome.”