If you enjoy panoramic views, you should visit Manzara Restaurant on the road to Kartepe from Masukiye, where you will see Sapanca Lake and Izmit Gulf at the same time. The region is covered by mostly linden and walnut trees. The restaurant offers brunch till 14:00, and has a menu from Black Sea region of Turkey. If you are visiting Sapanca during winter (late December till mid March), you may go for skiing in Kartepe, 16 km to Masukiye town center.

If you like nature and adventure at the same time, you may try Dere Tepe Duzzz ATV Riding & Nature Tours. They have licence plated 200-300 cc ATVs and an English speaker guide, an expert on nature all around Sapanca region.