The famous Sun Temple at Konark was built by Narasimha-I. This 13th-century temple located in Odisha, India is a masterpiece of Indian architecture. Option 1, Prataparudra, is incorrect as he was a king of the Kakatiya dynasty and not associated with the construction of the Sun Temple. Option 2, Anantavaiman, is also incorrect as there is no historical evidence linking him to the construction of the temple. Option 4, Narasimha-II, is incorrect as no such king existed in relation to the Sun Temple. Based on historical records and inscriptions, Narasimha-I is credited as the patron of the temple and responsible for its construction.