Just a 2-hour speedboat ride from the crowded beaches of Phuket, Thailand, the Similan Islands are a world famous dive spot in the Andaman Sea. While the Similans are better known for their surrounding underwater wonders, they are visually stunning themselves due to the giant granite boulder formations that shelter each island. The boulders were carved into their curious shapes over millions of years by seas and wind, some as large as houses. One of the most famous of those boulders is the symbol of the Similans, Sail Rock on Island No. 8 (also called Sailing Boat Rock). The trail to the top requires squeezing through the crevices of haphazardly strewn giant boulders and scaling a few wooden ladders but the view is more than enough reward for the effort. On my visit to the Similan Islands on RTW #8, their tranquility was a welcome relief from the Chinese New Year crowds in nearby Phuket.