Macedonia (Greek: Μακεδονία - Makedonia), also known as Aegean Macedonia (Macedonian: Егејска Македонија, Egejska Makedonija) is a historical and geographical region in northern Greece. It is the second most populous region of Greece and usually it is referred as Northern Greece with Thrace. It is situated between the Pindus Mountains and river Nestos and it borders west with Epirus and Thessaly, northwestern with Albania, north with the Republic of North Macedonia, northeastern with Bulgaria and east with Thrace. Its south coasts are washed by the Aegean Sea.