Some studies say it belonged to the time of Chandragupta Vikramaditya or Chandragupta II who built it in honour of his revered God, Vishnu. Even the place of the origin of the pillar is unknown. It is quite clear that the pillar was brought to Delhi around 1000 years ago. Parts of the inscription highlight the point of the origin of the pillar could be at Vidisha in Madhya Pradesh which flourished during the time of the Guptas. The real mystery lies on how the Iron Pillar manages to stand strong till date without being rusted and not being eroded by time and the climate.