Theth National Park (Albanian: Parku Kombëtar i Thethit) is a national park (1966) in northern Albania. In 2022, the park was amalgamated to form the Alps of Albania National Park. Established in 1966, the park covered 2,630 ha (26.3 km2) and is centred on the Albanian Alps, encompassing the larger portion of Shala Valley. The park was established to protect various ecosystems and biodiversity and the cultural and historical heritage of the region. It is dominated by high terrain, with a wide variety of natural features including valleys, rivers, mountains, waterfalls, dense forests and several rock formations. The International Union for Conservation of Nature (IUCN) has listed the park as Category II. Notably, the region has been also identified as an important Bird and Plant Area. In 2017, Theth has been further declared a Protected Historic Centre.

The Lock-in tower built in Theth, Dukagjin is typical of this area. A fort built at the end of the village and used by the whole village. It was the home of those families who, due to blood feuds, were forced to stay there (all males over the age of 14). Only the women of the house were free to go out and work some land in front of the tower. Today the tower can be visited and is located in an area of ​​great touristic value. It is located south of the village of Theth and very close to the Shala river. This tower has been built for 388 years, it is divided into 3 floors, where the upper 2 floors have an old wooden floor

Grunasi Waterfall is one of the most amazing natural attractions within Thethi National Park and in the hole Albanian Alps, declared a natural monument since 2002. Grunasi waterfall is located on the western slope of the Thethi valley in the Albanian Alps. It starts at the western foot of the Boshi mountain peak, where it forms a narrow rocky trough through a limestone slope, then the water immediately falls from a height of 25 m.At the bottom of the waterfall is formed a pond, from which water flows into the valley of Thethi, join the Shala river, at the beginning of the Grunasi canyon.The whole slope where the waters of this waterfall break are covered by a dense forest. Due to the water droplets that fall around the ivory, on sunny days it is almost always accompanied by a rainbow at the bottom of the sleigh. Its environment is one of the rare phenomena of the Albanian Alps and therefore is an important tourist point.

The Blue Eye is the most frequented natural attraction in Theth. This amazing attraction is placed in the village of Kaprre, approximately 7 km away from the centre of Thethi village.The Blue Eye of Kaprre, part of Thethi National Park, is a well (Black Well) with a surface of about 100 m2 and about 4-5 m deep, which is formed by the Black River flow that descends from the upper Kaprrea. Located between rocky and green slopes, with its depth this well takes on the colours of blue and emerald depending on the season, forming a fascinating landscape for all visitors. The Black River source in Maja e Zeze and is fed mainly by melting snow and in Nderlysa it joins Shala River to flow into the Drin river/ Komani Lake.