Knossos is a Bronze Age city and archaeological site in Crete. In 1900, Sir Arthur Evans bought the site where ruins had been found, and then worked on the restoration of its Minoan palace.
There were two sets of palaces at Knossos, the second, built following what is believed to have been an earthquake in around 1700 B.C., was inhabited from the 16-14th centuries B.C. In about 1450, Knossos was partially destroyed and then settled by Mycenaeans from mainland Greece. Archaeologist Kris Hirst says that a new theory is gaining favor about the end of the Minoans. They think there was an insurrection in the 15th century rather than an invading force. This is based on comparisons of radio isotopes of strontium within human burials near Knossos that proved the people buried in tombs before and after the fall of Knossos were from Crete, rather than Mycenaean invaders.
Source: www.culture.gr/2/21/211/21123a/e211wa03.html (Knossos)