La Grande Dune, outside Nefta, Tunisia
The igloo exterior of Luke’s house was filmed about 300 kilometers away on the dried-up salt lake of Chott El Jerid. The igloo is still there, reachable with a decent car at the GPS coordinates 33°50’34.42″N, 7°46’44.48″E.
The surrounding craters are man-made, to create the illusion that the underground house is next to it.
The igloo from the 1977 movie was dismantled, but again rebuilt for “Attack of the Clones,” and later restored by a fan.
Nearby is La Grande Dune, site of the Dune Sea. About 30 minutes from the igloo is the set of Mos Espa, the spaceport town where Anakin was discovered as a young slave.