Mametengu is actually the highest ranked ramen shop in the area according to the popular internet ranking sites.
The plaque next to the wall goes in to detail on the history of this shop.
That's the current owner's father in the upper left there. He was known as a ハイカラで色男, a high-class lady killer, back in his heyday. What else is a stud like this meant to do? Marry his sweetheart and open a ramen shop of course!
Apparently, they two of them are as strict and stubborn as they come.
Mametengu is similar to the other Takayama shops; thin wavy noodles in a fishy shoyu broth. I'd say that the soup here has much more fish in it.
I should also note that this is the only shop in the area that receives any sort of respectable score on the main ramen ranking websites.
Official Site Here
Gifu-ken, Takayama-shi, Hachikenmachi 2-62
Closest station: Takayama