Thessaloniki. The second largest city in Greece, Thessaloniki is a year-round destination with a rich cultural heritage, delicious food, and beautiful scenery. For those who want to discover more about this vibrant city, there are ancient archaeological sites, including the White Tower and the Rotunda, alongside quaint independent shops and restaurants that line the streets. One of Greece’s biggest museums and the focal point of northern Greece is Thessaloniki’s Archaeological Museum. Its distinctive collections of antiquated artifacts and its varied cultural events make for a captivating visit when in the city.