Killing Fields is out of town (14 kms I think) while S-21 is very much in the centre. You won't get to do both in one day (not comfortably anyway). The choice is yours, both very gruesome. You won't need a tuk tuk to get to S-21, I remember it was a 15 minute walk from our accomodation. You may $8 return for the Killing Fields.
If you have a half day, a good option could be to go to S 21 and the Royal Palace.
#2 chinarocks has been a member since 17/6/2011. Posts: 740
If you have 9-3 and you want to do both than you have time enough.. 2 hours at both sites is sufficient time IMO.
#5 tinoh has been a member since 13/2/2010. Posts: 40
If you get up early you should be able to do both (2 hours each place should be enough time) but you might be pressed for time depending on when you leave for the airport.
It shouldn't cost much more than $10-12us to get a tuk tuk to take you to both places and return you to your guest house. I recommend getting a guide at the killing fields - very informative for a few dollars.
I was able to do both with time to spare for lunch and some pints.. I am not sure if this is new or not but I did not need a guide for the killing fields because they give you an auto player/ear phones in your admission. I think it was around 10.00. Each site has a number which you punch in and he tells you the storey. That place was very disturbing!!!
Something I'd like to put right.The Killing Fields are all over Cambodia, not just the one popular with tourists in Phnom Penh.
If you fancy a more interesting trip take a minivan to Kampong Speu about 1 hour on highway 4 past the airport. Get a motodop to take you to Ampe Phnom Resort.
In the finely built pagoda there is a Chedi of bones, skulls and gruesome of all, the remnants of clothes of the victims. After that you have beautiful countryside surrounding the river (which you can bathe in if you want) Monkeys to feed and lots of stalls and huts to sit in selling you all kinds of good food. Lots of beautiful walks, including one which crosses the river on a rope bridge.You won't regret visiting this beautiful spot.All it takes is an adventurous spirit.
#8 sayadian has been a member since 15/1/2008. Posts: 1,557