Two Words: ANGKOR WAT
No need to book a tour, this can be very easily organised on your own, and if not, your hostel will be able to help.
Step 1: Organise a tuk tuk driver to pick you up at 5am (in order to make it in time for sunrise)
Step 2: Negotiate a price for the day. We paid $18US/ $24 for 3 of us from 5am to 12noon.
Step 3: Wake up at a ridiculous o’clock, pack lots of water and your fans and don’t forget long pants and a top that covers your shoulders if you would like to visit the temple within Angkor Wat. Note: Scarves and sarongs tied around your shoulders or waists will not be accepted.
Step 4: Line up with hundreds of other tourists to buy your tickets in the wee hours of the morning. You can choose to either buy a 1 day $20US, 3 day $40US or 7 day $60US pass. A new regulation requires all tickets to now have a photo taken so say cheese!
Step 5: Spend your day wandering around some of the most amazing temples you will ever see. Our tuck tuk driver took us to Angkor Wat (for sunrise) Bayan, Ta Prohm and Prasat Kravan. These are 4 of the main temples and is a well travelled route for most tours. If you would like to go elsewhere, please let the driver know. There may be an extra fee involved.
Go early in the morning for sunrise as it get REALLY REALLY HOT from mid morning onwards.
Other than Angkor Wat, there is a day market, and 2 night markets to visit while in Siem Reap. There is also the Lonely Planet recommended APSARA music and dance show at the Temple bar and restaurant (located on Pub St) The show is free and on every night at 7.30pm. You can sit and enjoy the show while eating dinner, or just have a few drinks.