If you'd love to add some extra culture to your trip, put Bank of Japan on your to-do list. Check if there are any guided tours or just look around in your own time.
You'll soon discover why this Chuo museum is visited by many travelers. If you're searching for more to see and do here, Tokyo Skytree, Tokyo Tower, and Tokyo Imperial Palace are in this area too. They won't take long to reach from Bank of Japan.