The Pirin mountains highlight several sites of outstanding natural beauty, spread all over the area. The most important sites of natural beauty are: the mt. Vihren,the rock formation Pirostiata, the Bunderishki caves, Kioshkata, the Demianishki Skok and Iulenski Skok waterfalls and the natural reserve Baiuvi dupki - Jinjiritsa There are also a few trees declared to be natural heritage, including the Baikusheva white fir, more than 1200 years old, 16m high and with a circumference of 5.70m.
A third hike is a hike along the blue and yellow trail, starting at the parking place of the hizha Vihren. You walk about 5 hours one-way, so better start early. After one hour you arrive at the Muratovo ezero, which is on your right hand. After having a break over there you can continue your way along the blue and yellow trail up to the other lakes which are 3 hours farther up. You will first arrive at the Banderishka Porta, from where the yellow trail goes its own way. You follow the yellow trail and then you arrive at several lakes which are on both sides of the trail. The trail is relatively easy to do.
A easy hike you can undertake from out the hizha Virhen, is a hike to the Ribno and Dalgo ezero (=lake). You can do this in 3 hours one-way. The path starts behind the mountainhut, where you pass a small bridge over the river and than you just follow the red or green trail. The signs (red and green) are good visible at most places, and there are enough people on the same trail, so its easy to follow. After the path has made a hughe turn to the left after 1 hour of walking, you arrive at a place were the path is nothing more than fallen rocks, there you leave the main trail and follow a path that goes down hill at your right side. Here you can find the Ribno lake and the Dalgo lake. Both lakes are clear, large lakes and offer a good opportunity to lay down and relax. Its overdone to mention, but remember that the evening falls in too soon, and you have to make your way back before its to dark to see the path.
Another hike which is worth to do is from the hizha Vihren to the mt. Vihren. The trail is in red and starts from the parking place in front of the mountainhut. The trail is very well marked by signs on rocks. The hike is 3 hours one way. You can do the hike without special equipment of course. The path is very rocky and steel upto the alpine meadow. From there its very relaxed and you follow a path climbing up to the point from where you have a spectacular view over the mountainrange and where you also can see the Vlahinski lakes. You can from there decide to go downwards to those lakes or/and go further to the top of the mountain. The last part of the trail is a bit more though, the path is steep, but you wont have to do any difficult climbing- manoeuvres. (Allthough, as I heard, some smarthead had managed to fall down the mountain) From the top you of course have a splendid view over the valley.