The Dead Sea – bordering Israel, the West Bank and Jordan – is a salt lake whose banks are more than 400m below sea level, the lowest point on dry land. Its famously hypersaline water makes floating easy, and its mineral-rich black mud is used for therapeutic and cosmetic treatments at area resorts. The surrounding desert offers many oases and historic sites.
NOTE: The Dead Sea is evaporating at an alarming rate and is said that it will be obsolete in 50 years.