The Mezquita-Catedral de Córdoba opens 856 columns of jasper, onyx, marble and granite to the night every evening except Sunday, transforming the eighth-century prayer hall into a play of shadow and selective illumination that standard daylight visits cannot replicate. Abd al-Rahman I began construction in 784 on the site of a Visigothic church, expanding the structure until his successors doubled its footprint under al-Hakam II. The horseshoe arches rise in tiers of alternating red brick and white stone, a rhythm borrowed from the Roman aqueduct at Mérida and perfected across 23,400 square metres of floor. Night access was formalised in 2018 when the cathedral chapter introduced The Soul of Córdoba, a choreographed sound-and-light sequence that traces the building's transformation from mosque to Renaissance cathedral after 1236. The evening program admits groups of forty or fewer, eliminating the shoulder-to-shoulder density that defines midday visits from March through October. Visitors enter through the Puerta del Perdón on Calle Cardenal Herrero, proceeding directly into the hypostyle hall where lighting designers have positioned fixtures to graze column bases and accentuate the mihrab's gold-mosaic calligraphy commissioned by Byzantine craftsmen under al-Hakam II in 965. The 16th-century cathedral nave, inserted into the mosque's centre by Charles V, appears less intrusive under low light, its Plateresque choir stalls and Baroque altarpiece receding into the periphery. The cordoba mosque night tour experience runs Monday through Saturday from 20:00 to 23:30, with final entry at 23:00. General admission tickets cost 25 EUR per person and include the full illuminated circuit. The format suits photographers working without flash and visitors seeking interpretive depth over checklist efficiency. Acoustic programming amplifies the hall's natural reverb, a quality lost during daytime hours when tour groups overlap in seven languages simultaneously. Guided night visits incorporate art-historical commentary on the Umayyad capitals and Mozarabic inscriptions, details easily overlooked in harsher overhead lighting. Cordoba's position as a Caliphate seat from 929 to 1031 elevated the mosque to a rival of Damascus and Baghdad. The original minaret, demolished in 1593 to make way for the current bell tower, stood 47 metres and employed a ramp system rather than stairs, permitting the muezzin to ride horseback to the summit. Fragments of Visigothic masonry remain embedded in the qibla wall, archaeological evidence of the church that preceded Islamic rule. The night format isolates these layers, guiding attention toward construction phases that blur during crowded daylight circuits.