We took a bus from Chiang Mai to Chiang Rai. It was on a big bus and took about 3 hours. We arrived in Chiang Rai at about 11am and took a tuk tuk to our guesthouse. We took a tuk tuk to a couple of the Buddha caves that are about 10km out Chiang Rai. We got lucky with a great tuk tuk driver that stopped and would show us around the caves. We then went to Wat Rong Khun (the white temple) which is definitely a must-see in Chiang Rai.