This is kinda obvious, but Japan. Specifically Nara, Kyoto, Fukuhara (Kobe), Dannoura (Shimonoseki) and other Taira related locations. Next year is a real possibility, although am dreading the flight as I have some confined space/sensory overload issues...
But I need to go, it's practically an obligation to go in fact. I need to go find Munemori's grave and see Kiyomori's temple and visit the statues of Tomomori and Yoshitsune at the site of the battle that Tomomori really probably did nothing in but die...and the city Shigehira burned...
And other stuff too
Not in the summer, though.