The National Library of Bhutan (NLB) (Dzongkha: Druk Gyelyong Pedzö) Thimphu, Bhutan was established in 1967 for the purpose of "preservation and promotion of the rich cultural and religious heritage" of Bhutan. It is located in the Kawajangtsa area of Thimphu, above the Royal Thimphu Golf Course, near the Bhutan Folk Heritage Museum and The National Institute for Zorig Chusum (Traditional Arts and Crafts).
More information on the Wikipedia page [1]
The English language version of the website is [2].