Kustendil is situated in the southern part of the Kyustendil Valley.The town is a national balneological resort at an altitude of 600 metres. There are more than 40 mineral springs in the town. The waters have a high content of sulfite compounds. These are used for the treatment of the locomotory system, gynecological and other kinds of diseases. The resort region includes several baths, balneological complexes and others. A Thracian settlement was founded at the place of the modern town in the 5th-4th centuries BC and the Romans developed it into an important stronghold, balneological resort and trade junction called Pautalia (Thracian for "town of springs") in the 1st century AD. Many Thracian and Roman objects are exhibited in the town's Regional History Museum, most notably an impressive numismatic collection. A fortress was built in the town in the 4th century (known by its later Ottoman name Hisarlaka). Kyustendil and its surrounding areas are well known as the orchard of Bulgaria, where mostly cherries, plums, apples and etc. are grown.