Let's say you live on an island. And you worship a lot of gods. What god would be the most important to you?
The goddess of the sea, of course! Matsu is her name, and waves are her game.
God of War Temple, and there are several other temples to be found in this area. You can easily get here by taking the tourist buses, and given its proximity to the other temple and Chihkan Towers, it's just part of one stop on your route!