Ancient Megalopolis was founded by a group of between 20 to 40 communities of the Arcadian League, in 371BC.
It took 10 years to build the city and it was the most important city of the region.

In this video, we explore the ruins and history of Ancient Megalopolis.

Location:
https://www.google.com/maps/place/Ancient+Amphitheater+of+Megalopolis/@37.4134495,22.1245868,16.25z/data=!4m13!1m7!3m6!1s0x1360442f39ca8f6f:0xa40ed7d43e9df7af!2sMegalpolis+222+00!3b1!8m2!3d37.401244!4d22.1364871!3m4!1s0x136045484692eb79:0xc2bd3003de8777ed!8m2!3d37.4101871!4d22.1272757