Merv was sacked by the Mongols.
Several cities existed on this site.
The site of Ancient Merv has been listed by the UNESCO as one of the World Heritage Sites.
... density of 43.6/km² (112.9/mi²). The racial makeup of the town is 98.12% White, 0.00% African American, 0.06% Native American, 0.58% Asian, 0.00% Pacific ...