Oh! You should visit Chiengmai and Chiengrai one day, just to see the old decorative temples and a hike on the mountains.
Some provinces in Thailand still have perfect Hindu sandstone buildings and temples. People would visit some old temples to see the sunrise through all the doors on summer solstice.
Wow this is awesome to hear, thank you for the info and advice. I am inspired to put these northern regions on my travel list. I'll search out the old Hindu temples.
You would like this place.
https://www.renown-travel.com/khmertemples/phimai.html