The Palazzo dell'Arsenale is a military complex at 22 via Arsenale in Turin, Italy. It originally housed both a training school and an arsenal, but the latter function was moved to the Military Arsenal in 1861. It still provides officers' basic training.

It is a square-shaped palazzo-style building, covering an entire block of 190 by 165 metres. It has all the features of an arsenal - grandiose underground rooms linked to the surface by ramps wide enough for bulky artillery trains or trailers, sturdy closely-spaced pillars supporting considerable weight, vast rooms with domed vaults.

Text from Wikipedia (CC BY-SA 4.0). Photo: Mastrocom, CC BY-SA 4.0, via Wikimedia Commons.