The Bridge over the River Kwai internationally famous, thanks to several motion pictures and books, the black iron bridge was brought from Java by the Japanese Army and reassembled under Japanese supervision by Allied prisoners of war labour as part of the Death Railway linking Thailand with Myanmar. Still in use today the bridge was the target of frequent Allied bombing raids during 1945, and was rebuilt after the war ended. The curved spans of the bridge are the original sections.
Kanchanaburi War Cemetery On Saeng Chuto Road, opposite the Railway Station, it contains the remains of 6,982 prisoners of war who perished during the construction of the "Death Railway".

Sai Yok National Park this park encompasses the famous Kwai Noi River and contains some waterfalls and caves on the river bank. Namtok Sai Yok Yai, 104 kms. from the town, flows directly into the river near the park office. lts idyllic beauty has been repeatedly celebrated in Thai poetry and song. Tham Lawa and Tham Daowadung are the two caves which house numerous stalactites and stalagmites. The smallest mammal in the world, Kitti's Hog-nosed Bat weighing just two grams, is found in the park area.
Activities

Elephant Trekking
Elephants in Sangkhla Buri are raised by Karen hilltribes for working purposes. When not working, they are available to tourists to ride. Some travel agents offer one-day elephant trekking in combination with rafting tours in the vicinity of Thong Pha Phum and Sangkhla Buri.