Timgad, called Thamugas by the Romans, was a Roman colonial town in North Africa founded by the Emperor Trajan around 100 AD. The ruins are noteworthy for being one of the best extant examples of the grid plan as used in Roman city planning. Notable features include:- streets: decumanus maximus and cardo, lined by a partially-restored Corinthian colonnade. - Trajan's Arch, a 12 m high triumphal arch- 3,500-seat theater- four thermae- a library- the Capitoline Templ