🔄 Updated 21 Jun 2026
Short answer: For ancient ruins choose Ayutthaya and Sukhothai; for Lanna temples, Chiang Mai (Doi Suthep) or Nan (Wat Phumin); for revered stupas, Nakhon Phanom (Phra That Phanom) and Nakhon Si Thammarat (Wat Phra Mahathat).
The picks, ranked
Ayutthaya
A World Heritage city full of old temples and stupas — highlights include the Buddha head in the tree roots at Wat Mahathat and riverside Wat Chaiwatthanaram at dusk.
Sukhothai
The historical park of Thailand’s first capital — Wat Mahathat and the giant Buddha face at Wat Si Chum, with a full day of cycling among ruins and lotus ponds.
Chiang Mai
Lanna temples inside the old moat plus Wat Phra That Doi Suthep on its hilltop with city views — the signature temple every Chiang Mai visitor climbs up to.
Nan
Wat Phumin with its “whispering lovers” mural and the quiet old temples of Nan town — a small-town setting that is lovely for a temple stroll.
Nakhon Phanom
Phra That Phanom, a sacred stupa central to the Mekong and Isan people, in a quiet riverside town with Laos across the water — a key pilgrimage for merit-makers.
Nakhon Si Thammarat
Wat Phra Mahathat, the South’s great golden stupa, plus the Ai Khai shrine at Wat Chedi that draws merit-seekers hoping for good fortune.
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