Thessaloniki is the second-largest city in Greece and a jewel of the northern port, where Byzantine relics, coastal scenery, and culinary culture intertwine, earning it the UNESCO title of “Gastronomic Capital”. Landmark White Tower (a 15th-century Ottoman structure, a symbol of the city; from its top, one can overlook the bay and Mount Olympus); the Upper Town (Ano Poli) features cobblestone alleys, Byzantine churches, and red-tiled old houses, exuding a nostalgic atmosphere; the waterfront promenade, the Church of Saint Demetrius (a 5th-century Byzantine treasure), and the Archaeological Museum (housing Macedonian royal gold artifacts) are unmissable. Must-try foods include Bougatsa (creamy pastry pie), Koulouri (sesame bread ring), Greek souvlaki, and seafood platter; street food is abundant and flavourful, with authentic local tastes.