Raised walkways and stilted treehouses put you eye-level with hornbills in one of Borneo's oldest rainforests.
Danum Valley's lodges are strung through primary rainforest on raised timber walkways, with a handful of rooms built as proper treehouses among the dipterocarps. At dawn the canopy erupts with gibbon calls and hornbill wingbeats loud enough to wake you before the alarm does, which is exactly the point of staying here rather than in town.
Guides lead night walks with red-filtered torches to find slow lorises and civets, and dawn canopy-walk sessions where, with real luck, you will spot orangutans moving through the treetops. The lodges run on generator power for a few hours a day only, so evenings are candlelit and genuinely quiet.
Bring a dry bag for camera gear; even the covered walkways get soaked in a valley that receives rain most afternoons, and the humidity finds its way into everything within a day.