Doriscus
Doriscus (Ancient Greek: Δορίσκος and Δωρίσκος, Dorískos) was a settlement in ancient Thrace (modern-day Greece), on the northern shores of Aegean Sea, in a plain west of the river Hebrus. It was notable for remaining in Persian hands for many years after the Second Persian invasion of Greece, and remained thus known as the last Persian stronghold in Europe.