The Olive tree of Vouves is probably one of the oldest olive trees in the world, which remains productive to this day. The exact age of the tree cannot be determined. While tree ring analysis demonstrated the tree to be at least 2000 years old, scientists from the University of Crete have estimated it to be 4000 years old. In 1997 it was declared a protected natural monument and, in October 2009, the Olive Tree Museum of Vouves was inaugurated in a nearby 19th-century house, displaying traditional tools used in the process of olive cultivation. As of the Olympic Games in Athens in 2004, olive branches “kotinos” from this ancient olive tree were used for the wreath of Marathon winners in every Olympic game. Every year over 20,000 people from all over the world visit this ancient tree.