Abstract: The Koch rulers played a crucial yet limited role in shaping the architectural heritage of medieval Assam, particularly during the sixteenth century. Emerging as a powerful political force under Biswasingha and his successors, the Kochas expanded their influence across the Brahmaputra Valley and patronized temple construction and renovation as an expression of their devotion to Shakti and Vaishnava worship. Although historical records and material evidence are scarce, literary sources such as the Daranga Rajbanshavali and local traditions associate several important religious sites with Koch patronage. The most significant architectural contribution of the Koch dynasty is the reconstruction of the Kamakhya Temple on the Nilachal Hills under Maharaja Naranarayan. This renovation introduced a distinctive hybrid architectural style, combining traditional Hindu structural forms with Islamic elements such as domical superstructures, marking a new phase in late-medieval Assamese architecture. Similar syncretic influences are visible in the renovated Hayagriva–Madhava Temple at Hajo and the Pandunath Vishnu Temple, both associated with Raghudeva, though executed with varying levels of craftsmanship and architectural coherence. The Muradeo Temple and other minor sites, now largely ruined further attest to Koch religious activity but offer limited scope for architectural analysis. Overall, the Koch rulers’ architectural legacy in Assam is confined mainly to religious monuments. Despite the small number of surviving structures, their patronage—especially the reconstruction of the Kamakhya Temple—played a formative role in introducing hybrid architectural idioms and concluding the phase of medieval temple architecture in the Brahmaputra Valley.
Sanjoy Das (Sun,) studied this question.