There are well-known olive trees in Croatia and the island of Crete that have been tested and dated at around 1600 and 2000 years old respectively. There have also been claims of the existence of millennial olive trees in Athens, Sardinia, and Israel, some supposedly as old as 4,000 years old! They still produces olives, and they are highly prized. Olive trees are hardy and drought-, disease- and fire-resistant — part of the reason for their longevity and their widespread use.