In the 1960s, the Aswan High
Dam was built to control the flow of the Nile. This resulted in the creation
of Lake Nasser, some 300km (180 miles) long.
It was obvious when the Dam was being built that many ancient structures
would be drowned by Lake Nasser, so UNESCO funded the rescuing of a number
of them. They were demolished and then rebuilt stone by stone outside
the area of the lake.
One of the most striking is the Temple of Philae which was moved to a
specially constructed island, and it is hard to believe that it has not
been there for 2000 years.