The Pea Fowl mural?...
Same lens I used for the frontier fort fence pic.
A relatively inexpensive (compared to any name brand glass) piscis oculus...
Though mine is un chipp'd/MF version.
http://www.ebay.com/ctg/Rokinon-8-mm...=Camera_Lenses
http://www.ebay.com/itm/Rokinon-8mm-...item19d568ef92
http://www.ebay.com/ctg/Rokinon-8mm-...=Camera_Lenses
With 180 deg, ya gotta make sure yer wear'n good shoes, or at the VERY least, that your feets iz clean...
It'll even catch a dangl'n lens cap on a lanyard.