If you're looking for some inspiration for your trip, drop by Nagoya Station Tourist Information Center. You may be able to pick up some helpful maps or brochures.
You'll have no end of sightseeing choices when spending time in Nagoya City Centre. Nagoya Station Tourist Information Center is a good place to kick off here, but there are plenty of other worthwhile sights to explore. Nagoya Castle, Atsuta Jingu Shrine, and Toyota Commemorative Museum of Industry and Technology are not far from the tourist information center and will fill in your day nicely.