Hi Tomas, this is my submission for your photo challenge today: Edinburgh Castle is an ancient fortress erected on a rock of volcanic origin located in the center of the city of Edinburgh. It is located at the top of Castlehill Street, one of the four streets that form the Royal Mile. The castle is open to visitors and is managed by Historic Scotland. It is the most visited tourist attraction in Scotland. Three of its sides are protected by steep cliffs, and access to the castle is limited to a steeply sloping street on the eastern side of the castle.