Thrissur, formerly Trichur, also known by its historical name Thrissivaperur, is a city and the headquarters of the Thrissur district in Kerala, India. It is the third largest urban agglomeration in Kerala after Kochi and Kozhikode, and the 21st largest in India. The city is built around a 65-acre hillock called Thekkinkadu Maidanam which seats the Vadakkunnathan temple. It is located 304 kilometres north-west of the state's capital city, Thiruvananthapuram.