Dornod Aimag is one of the 21 aimags (provinces) of Mongolia, located in the east of the country. Its capital is Choibalsan.The aimag was created during the administrative reorganisation of 1941 with the name of Choibalsan, after the communist leader Khorloogiin Choibalsan. The capital, which previously had been called Bayan Tümen, also received the name Choibalsan. In 1963, the aimag was given the current name Dornod.With 123,600 km2 of grassy steppe where Mongolia, China and the Russian Federation meet, Dornod Aimag is the largest in eastern Mongolia. The Kherlen and Ulz rivers flow east through the aimag. There are also wetlands and lake areas, the largest being Lake Buir in the far east.One of Dornod Aimag was the site of a series of decisive battles that thwarted a Japanese invasion in 1939. Our country is famous for Buir nuur, khalkh gol,steppe of Menen and Kherlen Bars city.
• Khokh Nuur. The lowest point in Mongolia is Khokh Nuur (Blue Lake), a medium-sized freshwater lake at 560m altitude. Other than the thrill of standing in the lowest part of the country, there isn't much to keep you here, though the lake has a subtle beauty and you could combine it with an exploration of the Wall of Chinggis Khaan. The lake is also an important migration point for birds and you can spot many waders and shore birds here.

• Buir Nuur. This beautiful lake is the largest in eastern Mongolia (the northern shore is actually in China). The surrounding countryside is mostly grassland, though there are a few trees. The lake has a maximum depth of 50m
• Khalkhin Gol. The banks of the Khalkhin Gol, in the far eastern part of Dornod, are of particular interest to war historians because of the battles against the Japanese in 1939. The memorials are real socialist masterpieces, built to honour the Russian and Mongolian soldiers who died here. The largest memorial is the 50m Khamar Davaa. A museum in Siimber (also known as Tsagaannuur), and a smaller one in Choibalsan, offer some explanations (in Mongolian) about the history of the battles.