Did you know that Bhutan had no cities until the 1960s? That was also the same decade that Bhutan established its national park system.
In the 1960s, the protected areas system covered almost the entire southern and northern regions of the country. In 1993, the parks system was revised “for better ecological representation and realistic management.” Today, Bhutan has 10 formally protected areas covering more than a quarter of the country.
You can read more about the individual parks here.