Wat Phra Mahathat Woramahawihan is located on Ratchadamnoen Road in Tambon Nai Mueang. This is a first class royal temple. Formerly named Wat Phra Borom That, this is one of the most important historical sites in southern Thailand and in all of Thailand. According to the legend of Phra Borom That Nakhon Si Thammarat, Prince Thanakuman and Queen Hem Chala brought Buddha relics to Hat Sai Kaeo and built a small pagoda to mark the location. Later on, King Si-Thamma Sokarat established the city of Nakhon Si Thammarat and built a new pagoda. The present pagoda has a distinctive Sri Lankan style, measuring 55.78 metres high (measured by the Fine Arts Department during the renovation of the gold top in 1995). The height from the lotus base to the gold top is 6.80 metres. The top is entirely covered with pure gold. Inside the temple are many buildings of importance, especially the royal building which has beautiful architecture from the Ayutthaya period, and the Sam Chom building where the Buddha image attired in royal wardrobe, Phra Si Thamma Sokarat, is housed. There are also the Phra Maha Phinetkrom (the equestrian image) building and the Thap Kaset building, while the Khian and Pho Lanka buildings are used to display artifacts that were donated to the temple by Buddhists.

Phra Phutthasihing is housed in the Phra Phuttha Sihing hall near the Provincial Hall. This sacred image was believed to have been ordered by the king of Lanka in 157 AD and was brought to Thailand during the reign of King Ramkhamhaeng the Great. There are currently 3 similar images in Thailand. One is housed at the National Museum in Bangkok, another at Wat Phra Sing in Chiang Mai and this image in Nakhon Si Thammarat. The hall housing the image was originally the Buddha image hall of the palace of Chao Phraya Nakhon (Noi). The hall is divided into 2 parts; the front portion houses Phra Phuttha Sihing, Phra Lak Ngoen and Phra Lak Thong and the back portion houses the ashes of the ancestors of the Na Nakhon family.

Ho Phra Isuan is on Ratchadamnoen Road. It is a historical site of the Brahman religion. On display is the Shiva Linga, the symbol of the Brahman god Shiva. There are also several bronze images, such as the Siwa Nattarat image, Phra Uma and Phra Phikkhanet. The bronze images in this hall are replicas of the real images that are in Nakhon Si Thammarat National Museum.

Ho Phra Narai is also on Ratchadamnoen Road, opposite Ho Phra Isuan, and is another Brahman place of worship. The original structure and design of this hall are unknown. However, a gray sandstone image of the Brahman god Narai wearing a hat and holding a conch in the right hand was discovered in the hall. It was estimated that it dates from the 11 th -12 th Buddhist century. This image is now in the National Museum in town. The only artifact on display in the hall is a replica of the Narai image discovered at an archaeological dig in Amphoe Sichon.

Phra Wihan Sung, or Ho Phra Sung, is an important historical site located just outside the ancient city wall to the north in the area of Sanam Na Muang, on Ratchadamnoen Road. The site is so called because of its high location on a hill, 2.10 metres above level ground. There is no exact historical evidence but it is believed that its architecture and wall murals are from the early Rattanakosin period. The building houses plaster images with a thick, clay core. The images are either from the 18 th -19 th century or from the late Ayutthaya period.

The Thai-style monks' residence of Wat Wang Tawan Tok is on Ratchadamnoen Road, in the area said to be opposite Wang Tawan Ok (Eastern Palace), the retreat of Chao Chom Prang. Formerly a park, Chao Phraya Nakhon (Noi) donated Wang Tawan Ok and the park opposite, to a temple, now known as Wat Wang Tawan Tok(Western Palace Temple). In 1888, Phra Khru Kachat (Yong) and his disciples built a group of houses for monks. The 3 houses have a pointed roof connected to the others, and there are exquisite Nakhon Si Thammarat designs on the walls, doors, windows, and vents. The Siam Architects Society named these houses the best conservation effort in the area of historical sites and temples in 1992.

Wat Chai Na Meditation Centre is on Phatthanakan Thung Prang Road. Meditation courses are held for Thais and foreigners. The famous monk Phutthathat Bhikkhu established the centre as a branch of his monastery in Surat Thani. The centre is peaceful with an abundance of shady trees.

Chinese buildings at Wat Pradu and Wat Chaeng is on Ratchadamnoen Road near the provincial stadium. Built in the early Rattanakosin period, they house the ashes of Phraya Nakhon and is believed to also have the ashes of King Taksin the Great.

Chedi Yak is the province's second tallest pagoda, after Phra Borom That pagoda. It is located near Nakhon Si Thammarat Municipality in the abandoned Wat Chedi area. It is said that the pagoda was built by Khotkhiri, a wealthy Mon, and his employees when they took refuge in the city in 1003.

Residence of Ok Ya Sena Phimuk (Yamada Nagamasa) Yamada Nagamasa was a Japanese volunteer soldier who lived in the Ayutthaya period during the reign of King Songtham. For his many contributions to the palace, he was rewarded by being bestowed the title of Ok Ya Sena Phimuk and appointed lord of Nakhon Si Thammarat in 1629. Traces of his home are still visible in the area of the Thai restaurant on Nang Ngam Road (beside the provincial hall).