Giresun add Kuzalan Waterfall to your trip with Blue Lake on your trip. The area, also called the ”white stone of the Black Sea" and formed by the influence of mineral waters, is the largest travertine field in the region.
We came across a crowded time, but it was a nice experience, I think it was worth the way we went, I recommend you to take a short pair of shorts if you are going to go into the water