Netzer initiated and directed excavations at several building projects of Herod the Great, the ancient king of Judea. In the mid-1960s, Netzer was co-architect, together with I. Dunayevsky, of the excavations at
Masada, directed by Professor
Yigael Yadin. After Yadin's death, Netzer completed the final excavation report
The Buildings, Stratigraphy and Architecture of Masada. Later, Netzer directed the restoration of the Masada site on behalf of Israel's National Parks Authority. In 1968, Netzer initiated and directed large-scale excavations at the site of Herod's winter palace at
Jericho. In 1972, he began excavating at the huge palace complex of Herodium, located in the desert outside Bethlehem. His first phase of work continued to 1987, as he excavated palace structures. He returned to the dig from 1997–2000, and again from 2000–2010. The ancient Jewish historian,
Josephus Flavius, had written that Herod's tomb was located at his fortified palace of Herodium. According to Patrich and Arubas, the tomb is too modest to be Herod's and has several unlikely features. an opinion which by now has become generally accepted.
Jericho Netzer excavated at Jericho from 1973, and continued working there over the next decade. ==Private life; death==