I think Uwajima Castle wins the "cutest castle" category hands down. The dramatic buildup requires visitors to hike fifteen minutes up to the top of a hill, only to be greeted by this quaint, three-story structure. I couldn't help but chuckle. Completed in 1596, Uwajima-Jo is significant because it is one of only a handful of castles to still posses its original, Edo Period central tower.