Thessaloniki, Greece's second city, offers a laid back vibe and atmosphere. The middle of the city is filled with ancient ruins including the Rotunda, the Roman Agora, the Arch of Galerius and the Crypt of Agios Demetrios which are all worth a visit. If you'd like to learn more about the history of the city, take a peep in one of the museums: Museum of Byzantine Culture, the Archeological Museum and the Cinema Museum of Thessaloniki.
Just off the harbour you will find the Ladadika district which is the place to go for all your eating and drinking needs. Filled with incredible restaurants, tavernas and bars, you can experience some real Greek delicacies in this area.
If you're looking to escape the city for an afternoon, visit the Axios-Loudias-Aliakmonas National Park, just 6 miles away from Thessaloniki.