Why two days, and why in this order
Two nights is the minimum that makes Phnom Penh worth the journey, and it is also enough. One day gets you the Khmer Rouge sites or the palace, not both, and a single day that tries for both does justice to neither.
The order matters more than the content. Tuol Sleng and Choeung Ek go on the afternoon of the first day, and nothing else goes after them. The palace, the museum and the river go on the second morning. Done that way the trip has a shape: the hardest thing first, and then a day that shows you the city those events happened to, still functioning, loud and ordinary.
The reverse order - palace first, killing fields last - is what a lot of tours sell because it fits their transfers, and it leaves you finishing the city at Choeung Ek and getting on a plane. It is a worse trip.
One piece of logistics that catches people out: Phnom Penh switched to Techo International Airport on 9 September 2025, about 20 to 24 kilometres south of the centre, so allow 40 to 50 minutes each way and more in the evening peak. The old airport was half that.

Tuol Sleng and Choeung Ek with a Guide
The two Khmer Rouge sites in one half-day, with a guide and transport between them. Done quietly, at the right pace.
From $78
4 hours










