Ballıkayalar Nature Park, located on the border of Tavşanlı Village of Gebze, Kocaeli will be an excellent route for rock climbing and trekking. You will likely encounter animals such as rabbits, foxes, jackals, boars, and jays along the way. It has easy and medium level tracks. Along the trekking route, you can have a pleasant walk during the day with beautiful views while passing by small ponds which have been formed by large and small waterfalls.

If you are interested in exploring the waterfalls, Serindere Canyon will be a good choice. Serindere Canyon, which has 6 waterfalls with heights varying between 10 and 20 meters, is the most challenging canyon in Kocaeli and the region. While exploring the waterfalls and ponds in Serindere Canyon, which is 26 kilometers away from İzmit, you can cool off under the waterfall, trek, or rock climb. During your trip to Kocaeli, traditional dishes such as Umaç Soup, Kandıra Yoğurdu, İzmit Pişmaniyesi, Pide with Mancar, Simit Dolma, Dartılı Keşkek should be tasted. On the way back, you will find shops in the city center selling Karamürsel Baskets or items made of lefke fabric which can be good gift choices as souvenirs.