The near suburb of Köşi, until 2013 a separate village but in that year annexed by Ashgabat, may have been site of a Parthian fortress constructed to protect the capital city, Nisa, based on discoveries of pottery and other artifacts in the 1970s and as recently as 2020. Other artifacts indicating settlement during the Parthian period were reportedly discovered during laying of telephone cables on the site of the Gülistan (Russian) Bazaar in downtown Ashgabat.