Tiryns or is a Mycenaean archaeological site in Argolis in the Peloponnese, and the location from which mythical hero Heracles performed his Twelve Labours.
Tiryns was a hill fort with occupation ranging back seven thousand years, from before the beginning of the Bronze Age. It reached its height between 1400 and 1200 BC, when it was one of the most important centers of the Mycenaean world, and in particular in Argolis. Its most notable features were its palace, its Cyclopean tunnels and especially its walls, which gave the city its Homeric epithet of "mighty walled Tiryns".
Wikipedia https://en.wikipedia.org/wiki/Tiryns
UNESCO website http://whc.unesco.org/en/list/941
Address 21100, Greece
Coordinates 37°35'57.141" N 22°48'0.092" E