In addition to being a very striking building, the library at Wat Phra Singh is an example of classical Lanna architecture, or so I have read. Before the modern Thai state began to take shape in the late 18th century, a Lan Na kingdom centered in Chiang Mai ruled much of the northern part of what is now Thailand. The history is complex and I certainly only know the barest outline. But Lanna as a tradition (and a marketing buzzword) is alive and well in Chiang Mai today – Lanna architecture, Lanna style, Lanna cuisine, Lanna massage, et cetera, et cetera… Be that as it may, Wat Phra Singh has one cool library building.
