Still in Angkor Thom this is Phimean Akas, the palace of King Suryavaman I and this is the Phimeanakas, the Heavenly Palace where the king spent the first part of each night with the Naga queen.
There was an awful lot of this. Climbing those steep narrow steps waaaay up there. Be Careful! And you can give a guess as to the condition of my calves.