If you fancy a bit of meditation or simply want to experience very nice architecture, you can reach Wat Luang Khun Win by car or by trekking. This is a beautiful temple situated at the top of the mountain in the middle of the forest.
It's a pretty big complex with a nice garden where Thai people come on special occasions for ceremonies.
Suggestion: as it's a Buddhist temple, we would like you to be respectful and cover your shoulders and knees. Thank you!