Chaloem Rattanakosin National Park (Tham Than Lot) :: The park is situated approximately 97 kilometers from Kanchanaburi city, or 22 kilometers from Nong Prue District along Highway No. 3086.
Locally known as Tham Than Lot (Than Lot Cave), this 54-square-kilometre park embraces pristine forest, waterfalls, and several caves including include Than Lot Noi Cave and Than Lot Yai Cave, which are accessible through a 2.5-kilometer nature trail along the stream. The two caves are naturally decorated with spectacular stalactites and stalagmites one of which is the worlds tallest stalagmite pillar. The ideal time of the year to visit the caves is from February to April. It is recommended that you request the services of a park ranger as your guide.
Outside of the caves are several species of birds and the barking tree frog whose croak sounds very much like a barking puppy. Admission fee is 200 baht. Bungalow accommodations and camping facilities are available.
To get there, take Kanchanaburi - Nong Prue buses which depart from the Kanchanaburi Bus Terminal every 20 minutes between 6.15 a.m. and 6.30 p.m. The journey takes 2 hours and costs 28 baht. From Nong Prue, chartered vans (Song Thaeo) can be hired to take visitors another 22 kilometers to the park (fares are negotiable).
       Huai Ongkot Royal Project :: The objective of the royal project site is to develop the infertile area around the Ongkhot basin. It is located at tambon Somdet Charoen, Nong Phru District, 130 kilometers from Kanchanaburi. The Neolithic remains have been found in the area.