Siem Reap is a great base for exploring the temples of Angkor Wat. Expect cute cafes, tasty food options, cheap beers and massages.
Angkor Wat is a truly impressive sight. Constructed in early 12th Century, it is the largest religious monument in the world. This was one of the most memorable travel experiences I have ever had!
Much more than a brief stop on the way to visiting the temples of Angkor Wat; Phnom Penh provides an excellent introduction to Cambodia. Providing insight into the devastating history but also showcasing the beauty and resilience of its people, it's well worth adding the capital to your itinerary.