Since 2004, Fundación Canal - Fundación Canal - Sala Castellana 214 is an exhibition space located in the Paseo de la Castellana in Madrid. It is located in a subway water tank, which was born with the mission to meet the needs of drinking water that had arisen due to the expansion of Madrid. It preserves the image of an old cistern, with its 144 brick arches. Under them, there are exhibits of great relevance such as "Warriors of Xi'an", "Pharaoh" or "Rome SPQR".