Plan of a fortified Capital city as described by Kautilya in Arthashastra. #Thread
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The king shall build his capital at the center of his kingdom near a water source and fortify it with moats, Rampart and high Parapet walls encircling the city. ++

Design of Ramparts, Parapets and towers on top of them is described in detail. ++

Inside of the fortification there will be roads, gates, aqueducts & drainages. The Royal residences and residential areas for different Varnas are also described in detail. See city plan image in first tweet of this this thread. ++

Temples to gods like Siva, Lakshmi, Vaishravana, Ashvins & Kali are built at city center. Tutelary deities are installed at different parts of the city and guardian deities at the gates. ++