Hell Fire Pass--You can take a train from Kanchanaburi station to Nam Tok station (which is also the terminal point). Here, you can see the most treacherous part of the railway that was being built through the jungle. You can walk the 4km (1-way) trail where the railroad used to run. Though there is little to see now, you can experience and imagine how tough life was then. There is also a musuem with interesting exhibits.
Bridge Over River Kwai--This was the actual steel bridge that was built in WWII. You will notice that the centre portion is rectangular, which is different from the other parts of the railway. This part was actually bombed by the Allies in 1945 and was replaced by the rectangular structure.
War Museum--Situated near the bridge. You should visit this museum which gives you an overview of the building of the railway. Some of the exhibits are duplicated at the Jeath Musuem.
Thailand-Burma Railway Centre--This is a new museum opened recently. It gives a chronological explanation of the Death
Railway. This museum is more organised than the War Musuem.
Quick Tips:
Best Way To Get Around:
You can get around in the Kanchanaburi town by renting a bicycle for THB40/day to visit the River Kwai Bridge, War cemetery, Chong Kai Cemetery, Jeath Museum, Way Museum, and Thailand-Burma Railway Centre.
From the Kanchanaburi town to Nam Tok to visit the Hell Fire Pass, you can take a train ride at THB17/pax. You can experience the actual route used during the War.
Public transport is very cheap, but may come only once every half an hour. Car rental is expensive, about THB1300/day, and companies do not provide any insurance.