Harghita County is situated approximately in the central part of Romania, on a surface of 6,610 square km., representing 2.8% from the territory of Romania. Its relief is formed from the mountains of Gurghiu, Hãsmas, Ciuc and Harghita. From the highlands the relief descends trough volcanic plateaus to the hilly areas and depressions, where the human communities can be found.
The climate is characteristic to the hilly areas, with long frosty winters and short, usually warm summers.
The hydrografic network is formed by a large number of rivers and lakes. The main rivers are: the Mures in vest, the Olt in south, the Bistrita and Trotus in east, the Târnava Mare and the Târnava Micã (Kisküküllö) in south-west. The presence of the volcanic mountains in the county assures a large number of mineral water springs, around 2200. In Harghita county can be found the only lake which has volcanic origin in Romania, the "Saint Ann" lake (Lacul Sfânta Ana) situated in picturesque site, in the volcanic crater "Ciomatu" at an altitude of 950 m. Another unique lake is the "Red Lake" (Lacu Rosu) which is a rarity being formed by natural obstruction.
There are many types of soils: brown, yellow-brown and acid-brown.
The geographical diversity of the county is emphasized also by the underground mineral resources like: the iron ore, cooper, kaolin, salt, clay, limestone, mineral water, etc. The woodlands which lay on more than 30% from the surface of the county, include many kinds of trees: larch-trees, pine-trees, beech, oak tress, lodging a rich and varied fauna composed by wild animals, such as the Carpathian bear, the brown bear, the wild boar, the marten, the wolf, the grouse, the eagle, etc. The mountain streams are rich in fishes. To the flora of the country lend variety forest fruits like strawberry, raspberry and blackberry, the mushrooms and the medicinal plants.

Harghita county has important and valuable resources in the field of tourism. As a result of the variety of the surface and the wonderful sights, the existence of more than 160 cultural monuments, also world-famous spas and mountain resorts like: Borsec, Bãile-Tusnad with Saint Ann Lake (Lacul Sfânta Ana), Izvorul Mures and Lacu Rosu (Red Lake), every year more and more tourists visit the county. Springs of mineral waters, sulfurous mophettas, mud-bathes, therapeutically peat's and others constitute very valuable richness which could be used more efficiently in the future.
The privatization, the improvement of the infrastructure and a good publicity would help considerably.

The county also has numerous historical monuments of tourist interest such as the Franciscan Monastery and the Roman Catholic Church in Sumuleu, rebuilt in 1804 in Baroque style, which has one of the biggest organ installations in Transylvania, Mikó fortress in the city of Miercurea Ciuc which dates from 1611 and which houses the County Museum of Ethnography, Saint Elias Monastery in Toplita built in 1910, the castle and museum complex of Lazarea built in the middle of the sixteenth-century, the wooden church in Tulghes built in 1813, the forge of Vlahita (1860 ), the Church of Sacel on whose bell is the inscription "through here passed the enlightened teacher Gheorghe Lazar in 1806" and the museums of Odorheiu - Secuiesc, Cristuru – Secuiesc and Gheorgheni where can be seen signs of human existence on this land since ancient times. (information from www.judetulharghita.ro)