Mialinay it is "Shah Cheragh" in Iran. If ever you want to know what something is when someone's only posted an image, try Google's image search (google > Images > Click the little camera icon right beside the searchbox > Paste the URL of the image (or upload an image). For things like this one it works really well, sometimes it's not as great but it's easy and fast.
YOU CAN'T JUST POST BEAUTIFUL SHIT EVERYONE OF US IS CRAVING TO SEE IN REAL LIFE AND NOT TELL US WHERE! D: