Best places to escape the heat with natural air conditioning or cool breezes?

Higher elevations in the hill country (Ella, Nuwara Eliya, Haputale) are significantly cooler. Some older colonial buildings and temples with thick stone walls stay naturally cool inside. Certain beaches with strong sea breezes or shaded areas under large trees can feel cooler. Many people plan indoor or shaded activities (museums, temples, cafes with AC or fans, shopping) during the hottest part of the day (11am-3pm) and do outdoor things early morning or late afternoon. Some guesthouses in hot areas have good cross-ventilation or fans that make a big difference.