Phibsoo Wildlife Sanctuary (PWS) was ensconcing established in 1974 as a reserved forest area and finally, in 1993 it got upgraded to Wildlife Sanctuary. It is the smallest protected area amongst the other Protected Areas in Bhutan with only an area of 269 Km2.
Even then the Phibsoo Wildlife Sanctuary never fails to amaze its visitors with its serene natural beauty and plant species along with a few animals.