Thessaloniki is a Greek port city on the Thermaic Gulf of the Aegean Sea. Evidence of Roman, Byzantine and Ottoman history remains, especially around Ano Poli, the upper town. The ruins of Roman Emperor Galerius’ 4th-century palace include the Rotunda that has been both a church and a mosque. Much of the city center was destroyed in the Great Fire of 1917. The rebuilt 20th-century city has a modern European layout.
Greece is a country in southeastern Europe with thousands of islands throughout the Aegean and Ionian seas. Influential in ancient times, it's often called the cradle of Western civilization. Athens, its capital, retains landmarks including the 5th-century B.C. Acropolis citadel with the Parthenon temple. Greece is also known for its beaches, from the black sands of Santorini to the party resorts of Mykonos.