Chiang Mai, Thailand
This is the best and the GREENEST way to see most, if not all, the Wats inside the moat or the old city. Renting a bike is fairly easy in Chiang Mai. Most guest houses and hotels have bikes for rental. Some may ask for a deposit of approx 2000B or leave your passport. Carry a map with you and if you are staying inside the moat, start with the nearest one to your hotel and go from there. Bike rental costs about 50B per day.