Wat Mahathat is considered one of the oldest and most significant temples of ancient Ayutthaya, known for housing the Buddha's holy relic and hosting important royal ceremonies. The temple features ancient structures, murals, and a famous Buddha image embedded in a tree's root.

Wat Ratchaburana is a historically significant Buddhist temple known for its fine main prang. The monastery was founded in 1424 by King Borommarachathirat II on the cremation site of his two elder brothers who died in a royal succession duel. Despite being looted in 1957, the temple still exhibits remains of original stucco work, pictures of mythical creature, Sri Lankan stupas, precious frescoes and Buddha images.

Wat Phra Si Sanphet served as the royal chapel and spiritual center for the Thais, notable for its role in royal ceremonies, and its three chedis housing the ashes of three Ayutthaya kings. Despite serious damage to its enormous Buddha image during the fall of Ayutthaya (1767), the temple, which has undergone significant restoration efforts, remains a key historical and archaeological site.

Wat Chaiwatthanaram, a major tourist attraction in Ayutthaya Historical Park, is a Buddhist temple built in 1630 by King Prasat Thong, designed in Khmer style to memorialize his mother and celebrate Ayutthaya Kingdom's victory over Longvek. The temple has a magnificient central 35-meter-high prang surrounded by four smaller prangs, eight chedi-shaped chapels with detailed Buddha reliefs, and an ordination hall. It faced destruction in 1767 by the Burmese, but underwent restoration by the Thai Department of Fine Arts in 1987.

Chao Sam Phraya National Museum displays the artifacts recovered from the temples of Wat Ratchaburana and Wat Mahathat including relics, articles made of gold, jewelry and much more.

The Bang Pa In Palace was established in the 17th century and revitalized in the mid-19th century. It stands as a captivating symbol of royal indulgence and the architectural amalgamation of Thai, Chinese, and Gothic styles. The palace complex is graced with meticulously maintained gardens, striking pavilions, and a serene lake.