A daily sound and light show is a highlight not to be missed. If you can make it you should also see the Abu Simbel Festival which takes place twice a year in February and October. Natural sunlight and architectural brilliance combine to make the inner sanctum of the temple light up. It's a breathtaking sight and makes the music, dance and food that accompanies the festival pale in comparison.
Abu Simbel lies near the Egyptian border with Sudan. The closest major town is Aswan. You can get to Abu Simbel by plane from either Cairo or Aswan. There are also daily buses and tours from Aswan to Abu Simbel. Perhaps the best way to visit Abu Simbel is by boat. There are plenty of cruises starting in Aswan that range from 3 - 5 days.