Located close to several of the main resorts on Thailand’s southwestern seaboard, the Khao Sok National Park encompasses a wondrously scenic tract of karst islets and pinnacles that rise in dramatic style from a tangle of turquoise bays. Inland, grey and purple-tinged mountain crags tower above the country’s largest rainforest – home to a wide array of animals, from elephant and tiger to bear, boar, bison, spectacled langur monkeys and endangered Lar gibbons. In January and February, you might also catch a glimpse the world’s largest flower – the giant, five-petaled Rafflesia. Bamboo rafting safaris down the Sok River and guided jungle treks are also on offer.