Gazilerdağı Nature Park lies within the province of Kocaeli, fifty-five kilometres from İzmit, forty-five from İstanbul and a hundred from Sakarya. It was declared a nature park by the Ministry of Agriculture and Forestry on 25 July 2013, and is notable for its natural vegetation and wildlife.

Maritime pine and black pine make up the dominant vegetation, with oak, juniper, aspen, strawberry tree, mastic, bay, bramble, rockrose, dog rose, fern, buckthorn and various meadow grasses also found here.

Designated
25.07.2013Checked: September 13, 2026

Entry fee

Marmara group 3 · category 1 · Per person
65 ₺Checked: September 13, 2026

When to go

Climate
Across Kocaeli as a whole, monthly mean temperatures run from 6.3 °C in January to 24 °C in August; the mean stays between 15 and 25 °C in May, June, July, August, September and October; rainfall is heaviest in December (108 mm) and lightest in August (42 mm). Long-term means for 1929-2025 from the Turkish State Meteorological Service (MGM).Checked: September 22, 2026