Ballikayalar Nature Park / Gebze
If what you are looking for is a spot different from the traditional camping sites, then Ballikayalar Nature Park will be the one to offer you the comfort of nature you are looking for. Since there is no camping site in this nature park, which is 45 minutes away from Istanbul, you can set up your tent through your own means.
You can find various traces of wild life in the nature of the park. Ballikayalar Nature Park, which is 1 km away from Tavsanli Village, can be included in the list as a peaceful getaway spot.