Sorry if this looks repetitive, the three Chedis are very impressive. Besides that, Wat Phra Si Sanphet, has less to offer.
The three Chedis at Wat Phra Si Sanphet, Ayutthaya
Ayutthaya Temples :
Wat Yai Chai Mongkol Wat Suwan Dararam Wat Mahathat Wat Phutthaisawan Wat Ratchaburana Wat Phra Sisanphet Wat Na Phra Men Wat Choeng Tha Wat Chai Wattanaram Bang Pa-In Palace
Picture Galleries Thai Temples (other website) :
Wat Phrakaew Wat Suthat Wat Arun Wat Mahathat Wat Ratchabophit Wat Khaek Silom Golden Mount Loha Prasat
Khmer Sanctuaries in Thailand :
Prasat Hin Phimai Phanom Wan Prasat Phanom Rung Muang Tam Phimai National Museum