Erebuni Fortress built
781 BCE.
Shown on the map at 40.141°, 44.538°.
Erebuni Fortress (Armenian: Էրեբունի ամրոց, romanized: Erebuni amrots') is an Urartian fortified city, located in Yerevan, Armenia. It is 1,017 metres (3,337 ft) above sea level. It was one of several fortresses built along the northern Urartian border and was one of the most important political, economic and cultural centers of the vast kingdom. The name Yerevan itself is derived from Erebuni.
Text from the Wikipedia article Erebuni Fortress, licensed CC BY-SA 4.0.