The FRIM Selangor Forest Park (FRIM-SFP) is a 544 ha park consisting of man-made tropical rain forest, a meandering stream (the River Kroh), waterfalls, arboreta, and botanic gardens. Today, this verdant man-made forest stands as a result of FRIM-SFP’s succesful reforestation efforts that were initiated back in the 1920s. Among the most famous attractions of FRIM-SFP are the unique crown shyness phenomenon of Dryobalanops aromatica, the forest canopy walkway, the hiking and cycling trails under the shade of the giant canopy trees. The property occupies 170 ha or one third of the total area of FRIM-SFP. The property is protected by approximately 262 ha of buffer zone, and 112 ha of tertiary zone.
Tropical rain forests which contain more than half of the biodiversity of the world are a major carbon sink for the maintenance of global climatic stability. It used to cover all of Malaysia, most of the South East Asia, equatorial Africa, Central America and equatorial South America. The rapid degradation and elimination of tropical rain forests in the past 100 years has been a cause of great universal concern. 
The FRIM-SFP provides the world with a rare and unique example of an area of tropical rain forest destroyed by farming and mining, and re-created through brilliant scientific effort. In the beginning, it was not known whether tropical rain forest could be re-created on such devastated land but the FRIM-SFP shows that it can be done within a human lifetime. All the attributes of tropical rain forest have been restored in FRIM-SFP including a four-layered structure of main canopy, understorey, shrub and ground layers, and very high level of biodiversity. The FRIM-SFP serves as a model to show that re-creation of complex tropical rain forest can be done even on totally deforested and degraded land.

The success of the FRIM-SFP model can be traced back to the extra-ordinary effort and vision of the head of the Malayan Forest Department, G.E.S Cubitt, when he decided to establish a forest research entity. In 1917, Cubitt head-hunted the best known tropical forest scientist in the world, who was Dr F. W. Foxworthy, an American already well-known for his research on the tropical trees and timbers. Cubitt and Foxworthy then searched for a suitable site for the Forest Research Institute (FRI) and decided on Kepong. This area was nine miles from the centre of the growing capital city of Kuala Lumpur and adjacent to the natural virgin forest of Bukit Lagong. The location has turned out to be ideal for research, biodiversity conservation, environmental education and accesibility for public recreation.
It is evident that the vision of its founders was to create a world class forest research institute. This vision has been sustained without a break through several generations of forest scientists and four major changes of government: British (1918-1941), Japanese (1942-1945), British (1945-1957) and Malaysian (1957-present). The onset of independence was a critical period in all ex-colonial countries. Forestry research went through a steep period of decline in Indonesia, Sri Lanka, Myanmar and the Philippines. Their decline is evident in the drop in scientific output. In contrast, FRIM-SFP sustained and built upon its founding vision.