English: Kos Minar or Mughal Mile stone The Kos Minars or Mile Pillars are medieval milestones that were made by the Afghan Ruler Sher Shah Suri and later on by Mughal emperors. These Minars were erected by the Mughal Emperors on the main highways across the empire to mark the distance. The Kos Minar is a solid round pillar,around 30 feet in height that stands on a masonry platform built with bricks and plastered over with lime. Though not architecturally very impressive they were an important part of communication and travel in a large empire.