Thevally Palace or Thevalli Palace is a prevalent legacy Palace arranged at the banks of Ashtamudi Lake, in Thevally, Kollam city. It is an imperative notable landmark in the territory of Kerala in India. Thevally Palace was worked in the middle of 1811 and 1819 the rule of Gowri Parvati Bayi. It is considered as a Hallmark of Kollam City. Presently the royal residence is utilized as the NCC Group Headquarters of Kollam district. The royal residence and its premises are currently claimed by PWD Thevally Palace is a sort of structural wonder arranged at Kollam city. It was worked in the middle of 1811 and 1819, amid the rule of Gowri Parvati Bayi.
The Kings of Travancore had utilized Thevally Palace amid their visits to Kollam keeping in mind the end goal to meet the British Residents and to examine with the authorities. The design of the royal residence is a blend of British, Dutch and Portuguese. The royal residence was once utilized for the managerial purposes. Kollam was the capital of Travancore kingdom at that point. The aggregate skeleton of the royal residence, made of materials like laterite and lime mortar. The fundamental fascination of the castle is that, it is arranged on the banks of Ashtamudi Lake. The royal residence incorporates a sanctuary of Lord Sastha.