From the World Heritage inscription:
Kinabalu Park, in the State of Sabah on the northern end of the island of Borneo, is dominated by Mount Kinabalu (4,095 m), the highest mountain between the Himalayas and New Guinea. It has a very wide range of habitats, from rich tropical lowland and hill rainforest to tropical mountain forest, sub-alpine forest and scrub on the higher elevations. It has been designated as a Centre of Plant Diversity for Southeast Asia and is exceptionally rich in species with examples of flora from the Himalayas, China, Australia, Malaysia, as well as pan-tropical flora.
Kinabalu is a magnificent mountain located near the northern cost of Borneo. The mountain can be climbed by non-technical climbers in a 2-3 day trek (although the record up the mountain is about 3 hours). You can also find a wide variety of unique plants in the park, including pitcher plants, the world smallest orchid, and the worlds largest flower: the six foot Rafflesia. There are also hot springs and rainforest walks in the area around the mountain. The park is about an hour drive from city of Kota Kinabalu.