Here is a photo of Edinburgh Castle, a slightly more uncommon angle taken from the Grassmarket area, Taken Tuesday 1st July 2014 on a unusually beautiful sunny Edinburgh day
The semi circle is the Edinburgh Castle Half Moon Battery, built 1573 – 1588
This impressive part of the castle is an artillery fortification, built after the Lang (long) siege of 1571-1573. Built to protect the Royal Palace from bombardment, the half moon battery sits on the ruins of David’s tower, the residence of King David II – son of Robert the Bruce