Koh Samui is the second largest island in Thailand (after Phuket) and is in the process of being Phuketicized. It didn't have any roads until the 1970's, and remained difficult to get to, but the airport put Samui firmly on the tourist map. When we were there Samui was still quite underdeveloped relative to the other Thai beach resorts, but I would think by now it's pretty indistinguishable. The airport, where these photos were taken, is great, very laid back with plenty of open space for tourists to catch some last minute sun before heading home.