Erected outside McGinn's Pistachio Tree Ranch in 2008, the world's largest pistachio nut is a truly impressive piece of engineering. Standing 30 ft tall and so substantial that it required a concrete base 9 ft deep, this giant steel-and-concrete nut is now firmly established as one of New Mexico's most distinctive roadside attractions.
If you go:
Don't just stop for the photos, as well as an amazing selection of pistachio products 'red chili are particularly recommended' McGinn's also sells great ice cream and a wide range of New Mexico wines and foods.
Links:

McGinn's Pistachio Tree Ranch
7320 US Highway 54/70 North
Alamogordo, New Mexico 88310 USA
Phone Numbers:
McGinn's Pistachio Tree Ranch
+1 (575) 4370602
+1 (575) 4370602