Egyptian temple Debod, as gifts to nations that had contributed to the preservation effort. Nevertheless, several other temples vanished beneath the lake. Today there are dozens of sites with substantial temple remains, although many more once existed, and none of the major temples in Lower or Middle Egypt are well preserved. Those that are well preserved, such as Karnak, Luxor, and Abu Simbel, draw tourists from around the world and are therefore a key attraction for the Egyptian tourist industry, which is a major sector of the Egyptian economy. Three temple sites—Ancient Thebes with its Necropolis, Memphis and its Necropolis, and the
Megalithic Temples of Malta Megalithic Temples of Malta The Megalithic Temples of Malta () are several prehistoric temples, some of which are UNESCO World Heritage Sites, built during three distinct periods approximately between 3600 BC and 700 BC on the island country of Malta. They have been claimed as the oldest free-standing structures on Earth. Archaeologists believe that these megalithic complexes are the result of local innovations in a process of cultural evolution. This led to the building of several temples of the Ġgantija phase (3600–3000 BC), culminating in the large Tarxien temple complex, which remained in use until 2500 BC. After this date,