Picture this: a hammock strung between two palms, waves gently lapping at the sand, the scent of lemongrass in the air, and your only worry being whether to order a mango smoothie or a coconut shake next. Welcome to Thailand’s little slice of tropical heaven—Koh Samui.

The boat ride starts off like any other through the ancient canals of Xochimilco. There's laughter in the distance, floating mariachi music, and the occasional splash of an oar. But then your trajinera turns away from the main path. The air gets still. The water darkens. The laughter fades. You're no longer headed toward a party—you’re heading into a ghost story.