I really love this site. It's such a unique place and the story behind it is fascinating (a king going into hiding after he kills his father and steals the throne from his brother).
But there's also a bit of an adventure to seeing Sigiriya. You can to climb up the different levels and that gives you a really close connection to the rock itself. The details along the way are really interesting and then the views and the broad picture from the top are wonderful.
One of the highlights of a heritage trip to Sri Lanka.