The Granada Metro (actually an LRT with 2.8 out of 16 kilometers being underground) began construction in 2007 and opened in 2017. The remains of the Albercón, an underground water reservoir used control the irrigation of a 13th-century Muslim palace, were found during the construction of this station, which was initially destroyed in 1977 by residential developments. This architectural discovery incited a redesign of the station, so that the metro would pass below the remains, which are now accessible via the metro lobby. The side walls that supported the reservoir were also maintained at th…