Muak Lek Arboretum is located 37 km from Saraburi town. This lively arboretum originates from its tributaries in the Khao Yai National Park and flow into the Pa Sak River that forms the border between 2 provinces.
The stream has rocky slopes that form small beautiful cascades. Along the stream are bridges and various kind of flowers and plants. Muak Lek Arboretum covers an area of 150 acres and is an intermediate forested area between Muak Lek district, Saraburi and Pak Chong district, Nakhon Ratchasima.