There's a lot to be learned from the shrubs and trees that grow at Karaca Arboretum. A place of recreation and scientific study, it'll bring out the tree hugger in you.
When you've finished exploring this botanical collection in Samanlı, why not check out Yalova Ataturk Mansion, Yuruyen Kosk, and Yalova Aqualand? They're not too far from Karaca Arboretum and also popular with many travelers.