The forest, rather a large park, and the sites of Hortiatis, Panorama and Oreokastro are worth a visit. 
Hortiatis  Mountain dominates the city, snow-capped in the winter, cool and refreshing in the summer. The village of Hortiatis is well known for its many tavernas serving meat delicacies. Spend an evening by the fire with a glass of retsina (traditional type of Greek wine), an acquired taste which brings the forest to your palate, and mouth-watering skewered fillet of lamb or kokoretsi, a speciality made of lamb's liver. 
Panorama As you can tell by its name, this smart city suburb offers a magnificent view of the surrounding hills and the bay. Its cosmopolitan shopping centre, with quality patisseries and Chinese restaurants, offers a lovely alternative to the city centre. 
A variety of fishermen's townlets as well as populous beaches with the names of Aretsou, Perea, Nei Epivates, Agia Triada, Nea Mihaniona, Epanomi, Asprovalta by the Thermaikos gulf can offer a special atmosphere and an unforgettable sunset.