Ruins of the Capitol Temple at Dougga. The Capitol of Dougga must be one of the most impressive remains from the Roman era. Built in 166 CE, its 10 metre high walls stand almost like the day it was inaugurated. Take a note of the walls, the may seem crude and ordinary, but here you have the best examples of the technique known as opus africanum, where large stones strengthen walls made from smaller stones. The portico rests on 6 impressive columns, and opens up the the interior. The Capitol served as the main temple for the entire city, and it was dedicated to the three gods of Jupiter, Juno and Minerva. Dougga, Tunisia, North Africa.