In have posted some details along with photos about the Paintings of Sigiriya Ladies in one of my previous post. Another important part of Sigiriya is "The Lion Gate" . Which is situated half way up the Sigiriya rock and it is the main entrance to the Palace of King Kashyapa I.
Sigiriya Rock
Please check my previous post about Sigiriya and the Paintings of Sigiriya Ladies here.
Here are the Photo's I took,
Below is an illustration by Charlie Swerdlow shows how the lion gate looks like in ancient time
Source - behance