At Ravangla you can visit the Buddha Park, the Ralong Hot Springs, a Bon Monastery and the Temi Tea Estate, the only tea estate I am told, in Sikkim. Temi tea is excellent, and you can buy it at the estate or in the local market of Ravangla. Coming from Gangtok, the Temi Gardens are before Ravangla, so visit this first, and then check-in. If you leave Gangtok in the morning, you will comfortably reach Barfung via Temi, in time for lunch. The food here is finger-licking and local. Let Sonam know you will be having lunch, as meals are prepared on order. After lunch, you can visit Ravangla, just 2 km out.
Don’t forget to try the famous ‘Churpi’, dried cottage cheese originally made from Yak milk, available in the local vegetable market of Ravangla, below the main road.