Tiryns, situated 20 km north-east of Mycenae on a low hill near the inlet of the Argolic Gulf, is another excellent example of the Mycenaean civilization. Criterion (i): The architecture and design of Mycenae and Tiryns, such as the Lion Gate and the Treasury of Atreus and the walls of Tiryns, are outstanding examples of human creative genius. On-going archaeological research projects are conducted on both sites, aiming at further exploring the history and values of the property. The boundaries of the archaeological site of Mycenae and its buffer zone were established by Ministerial Decree No 2160 of 1964. On both sites, systematic archaeological excavations are being carried out, while restoration works are conducted and others are scheduled.