For a day by the water with a difference, make your way to the steaming pools of Rokuryu Kosen. This place is known for its mineral-rich thermal waters.
You'll be spoiled for sightseeing choice when visiting Taito. Rokuryu Kosen is a great place to kick off here, but there are plenty of other worthy attractions to explore. Tokyo Skytree, Tokyo Tower, and Tokyo Imperial Palace are near the naturally heated water source and will round out your day nicely.