Quiz a local on what the most well-known structures in town are and they'll likely mention Greht Tower Minato. It's one of the first things you'll spot when you start your sightseeing.
You'll soon find out why this Hachinohe modern piece of architecture is visited by many travelers. If you're looking for more to see and do here, Hachinohe Morning Market, Tanesashi Beach, and Hachinohe City Museum are in the area too. They won't take you long to get to from Greht Tower Minato.