No, it was just a "culturally significant" town in Thailand, that I've visited.
Which is bigger than Chiang Dao, BTW.
OK, I added those places to my list...
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Thailand Population (by metro area, per Google)
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Bangkok 14,626,225
Chiang Mai 1,229,000
Hat Yai. 800,000
Chiang Rai. 557,000
Khon Kaen. 509,000
Surat Thani. 503,000
Lampang. 473,000
Phuket. 455,000
Udon Thani. 430,000
Lamphun. 334,000
Ubon Rat. 200,000
Nakhon Si T. 102,152
Koh Samui 70,000
Pai. 27,370
Chiang Dao. 15,194
Koh Phagnan. 14,000
Koh Chang. 5,000