The reserve contains a higher percentage of flora species than the entire continent of North America combined.
It is a designated ASEAN Heritage Park, one of the few in Singapore.
The forest contains dipterocarp trees, some of which are hundreds of years old and reach heights of 40 meters.
The reserve is home to the critically endangered Singapore freshwater crab, which is endemic to the area.
During World War II, the reserve served as a strategic military position for both British and Japanese forces due to its elevation.
The park is connected to the Central Catchment Nature Reserve via the Eco-Link@BKE, an overhead bridge designed to allow wildlife to cross safely over the expressway.
It has been protected as a forest reserve since 1883, making it one of the oldest in Singapore.
The granite quarrying that took place nearby in the early 20th century has since been repurposed into the scenic Hindhede Quarry.
The reserve is a primary site for the study of tropical rainforest ecosystem dynamics.
Bukit Timah Nature Reserve holds one of the largest remaining primary rainforest fragments in Singapore, covering 163 hectares. It contains the Bukit Timah Hill, which at 163 meters is the highest point in the country. The reserve sits within the Central Catchment Nature Reserve, forming a critical ecological corridor. Visitors access the park via the Visitor Centre, which offers educational displays on local biodiversity. The terrain includes various trails ranging from easy walking paths to steep, rugged climbs through dense canopy. It is known for its high concentration of endemic plant species and diverse wildlife, including the Malayan Colugo and various primate species. The area is managed by the National Parks Board (NParks) as an ASEAN Heritage Park. It serves as a vital research site for tropical ecology and conservation studies.
The viewing platform overlooking the Hindhede Quarry for a clear shot of the water and surrounding granite cliffs.
Bring insect repellent as mosquitoes are common in the dense tropical undergrowth.
Carry plenty of water as there are no shops or refill stations inside the forest trails.
Remain on the designated trails to protect the fragile soil and prevent accidental displacement of local wildlife.
Attempting the difficult Summit Trail if you have limited mobility, and feeding any wildlife, as it encourages aggressive behaviour.
Do not feed the macaques, refrain from littering, and remain on marked paths to avoid disturbing protected habitats.