One of your first stops should be Sendai City Tourist Information Center. Here, you'll be able to orient yourself and get some great tips before you begin exploring.
This tourist information center is located in Aoba Ward, a place that has loads going for it! Tohoku Gakuin University Tsuchitoi Campus, Sendai Anpanman Children's Museum & Mall, and Mitsui Outlet Park Sendaiko are other interesting sightseeing opportunities nearby when you've had your fill of Sendai City Tourist Information Center.