Wat Phra Mahathat Woramahawihan became the principal temple of Nakhon Si Thammarat. Phra Borommathat Chedi was built in the early 13th century. This gigantic-bell-shaped stupa, is the outstanding structure at the temple. And thereby it become a sacred place for the Buddhists. After the state was under control of Ayutthaya, the Kingdom of Thailand, flourished during 1350-1767.