Hagia Sophia of Thessaloniki, an 8th-c. Byzantine church with important mosaics — UNESCO.
Panagia Acheiropoietos, an Early Byzantine basilica in Thessaloniki — UNESCO.
The Byzantine fortress-town of Mystras (mainly Late Byzantine), with churches and frescoes.
The castle-town of Monemvasia, with Byzantine churches on the rock.
Hosios Loukas Monastery, a Middle Byzantine masterpiece with exquisite mosaics — UNESCO.
Daphni Monastery with its famous 11th-century mosaics, near Athens — UNESCO.