The Dead Sea is both the lowest point in Eurasia at 418 metres (1,371 ft) below sea level and falling, and the deepest hypersaline lake in the world at 330 m (1,083 ft) deep and 799 m (2,621 ft) below sea level. It is also one of the saltiest bodies of water on Earth with a salinity of about 30%. This is about 8.6 times greater than the average ocean salinity. It measures 67 kilometres (42 mi) long, up to 18 kilometres (11 mi) wide, and is located on the border between the West Bank, Israel, and Jordan, and lies in the Jordan Rift Valley. The main tributary is the Jordan River.

The Dead Sea has attracted interest and visitors from around the Mediterranean basin for thousands of years. It was a place of refuge for King David, it was one of the world's first health resorts for Herod the Great, and it has been the supplier of products as diverse as balms for Egyptian mummification to potash for fertilizers.
Climatic features :
Year-round sunny skies.
Dry, low polluted air .
Less then 50mm mean annual rainfall .
Summer average temperature: 32-39 degree celsius .
Winter average temperature: 20-23 degree celsius .
Weakened UV radiation, particularly the UVB (erythrogenic rays) .
High oxygen content due to the high barometric pressure.
Therapies popular at Dead Sea .

Climatotherapy:- Treatment which exploits local climatic features such as temperature, humidity, sunshine, Barometric pressure and special Atmospheric constituents.
Heliotherapy:- Treatment that exploits the biological effects of the sun's radiation.
Thalassotherapy:- Treatment that exploits bathing in Dead Sea water.
Balneotherapy:- Treatment that exploits black mineral mud of the Dead Sea.