Thankot belongs to a family of settlements around the rim of the Kathmandu Valley that includes Balambu, Satungal, Kirtipur, Machhegaun and Chapagaun. They are Newar towns, they are old, they sit where routes and farmland meet, and they are built to a recognisable grammar. Learn the grammar in one of them and you can read all of them.
The grammar has a small number of rules. Build densely, on the poorest ground you can, and keep the good soil for farming. Put the houses shoulder to shoulder along a street or around a courtyard so that walls are shared and heat is kept. Put a deity at the centre and other deities at the edges. Provide water publicly, shelter publicly, and a paved open platform for the town to stand on when something is happening. Then endow the whole arrangement so that it survives the death of the people who set it up.
Thankot's particular variation is that it is a route town rather than an agricultural town that happens to have a road. The bazaar is linear, drawn out along the line of the old trade road toward the pass, rather than gathered around a single square. Buildings face the street and open to it. That is the plan of a place that expected to sell to people passing through, and it is the physical trace of the trade described in our chronicle on Thankot as customs post and western gate.