The Balkan Peninsula is a region in southeastern Europe that includes countries such as ALBANIA (7 letters), Thrace (6 letters), OMAN (4 letters), Italy (5 letters), Yemen (5 letters), Serbia (6 letters), Sofia (5 letters), and SERB (4 letters). It is bordered by the Adriatic Sea to the west, the Ionian Sea to the southwest, the Aegean Sea to the south, and the Black Sea to the east. The peninsula is home to many different cultures, languages, and religions, making it a diverse and interesting region.