Bhir Mound is the oldest of Taxila's three excavated cities, and the hardest to read. Unlike Sirkap — with its orderly Greek grid — Bhir Mound is an organic maze of walls and chambers that reflect centuries of piecemeal growth. It was occupied from roughly the 6th century BC until the Bactrian Greeks replaced it with Sirkap around 180 BC, and the layers of rebuilding on rebuilding make the archaeology complex.
What you see today is a series of low stone walls at ground level, with the general outline of streets and building plots visible. It is not impressive in the way that Sirkap or Jaulian are impressive, but archaeologically it is fascinating — this is the city described by Chinese pilgrims as Takshashila, one of the great centres of learning in the ancient world. Wandering through it requires some imagination, but a local guide who knows where to look can make it come alive.