Sadagh Canyon Nature Park is an unspoiled and idyllic natural wonder where you can get away from the city and immerse yourself in nature; It is the second largest valley in Bursa, and contains unique types of plants such as spruce, hornbeam, oriental plane tree, juniper tar and silver linden. The park is 63 km from the center of Bursa and 9 km from the center of Orhanli, and takes its name from the village of Sadag in which it is located. You will also see the rock bath built by the Roman Emperor Hadrianus for his wife near the end of the walking path; This hammam has survived to this day and still contains hot water of 60 degrees Celsius.