The Spinal Nerve Tower is a landmark in Xenoblade Chronicles. It is located in the lower level of Bionis' Interior. It is the first landmark the party discovers upon leaving the First Lung, being located just east of it. It is a junction of three different pathways; the east one leads to the Vein Crossroad, while the south one leads to a dead-end with an Ether Crystal deposit.

A Heart-to-Heart - "Fiora's Body" - is located here.