The Great Himalayan National Park is India&rsquos latest entrant into UNESCO&rsquos prestigious list of world heritage sites. It was formally declared a national park in 1999 and inducted into the list in 2014. It falls under the Kullu district of Himachal and is spread over a total area of 754sq.km. The park boasts of an astounding array of flora and fauna, being home to more than 180 species of birds and 6 different types of vegetations. The Tirthan valley spans the&nbspsouthwestern portion of the park the parts that lie outside the demarcated park boundaries are sparsely inhabited, and at least so far, haven&rsquot fallen prey to any unscrupulous forms of tourism. To get to the national park, the roadhead is the&nbspvillage of Gushaini, which is about a couple of hours from Kullu. From here&nbspit's an  8km trek till the gate of the park, and from there a further 2km to a Rolla, where the camps are laid out for the night. Thereon, one can choose to trek further into the park. Treks of varying lengths and difficulties&nbspare available.