Royal Fortress built in mid-2nd century at Nissa - The capital of Parthians and a sacred city - image 1 of 6

Ruins of the Parthian fortress at Nissa - image 2 of 6

Streets inside the Royal fortress at Nissa - image 3 of

Streets inside the Royal fortress at Nissa - image 4 of 6

Walls of the Royal fortress at Nissa - image 5 of 6

Base of a wall at the Royal fortress at Nissa - image 6 of 6