The archaeological site of Mystras Greece has located 5 km from the town of Sparta, in Laconia Peloponnese, mainland Greece. The Byzantine Castle of Mystras is geographically located on the southern side of Peloponnese, close to Sparti Town. he Castle is an old town surrounded by Byzantine walls and with an imposing palace on top of the hill. Most of all this place is famous for its Byzantine churches with the impressive frescoes inside. At the foot of the hill is the modern village of Mystras, with traditional architecture and nice squares. Holidays in Mystras can be combined with visits to lovely close destinations, like Monemvasia and Gythio.n the courtyard of Agios Demetrios, you can visit the Archaeological Museum with many Byzantine and ecclesiastical exhibits. In 1989, it was declared a UNESCO World Heritage Monument. Things to do in the region include hiking and cycling.