The Royal Alcázar of Seville is one of the oldest royal palaces still in use in the world. It carries more than a thousand years of competing ambitions in its walls. The first fortress was built in the 11th century by the Abbadid dynasty; the Almohads expanded it and channelled water in via an aqueduct still traceable along Seville's backstreets.

The palace's most revealing chapter belongs to King Pedro the Cruel. In the 1350s, he built a secret tunnel connecting the Alcázar to the Jewish quarter next door. Pedro's closeness to Seville's Jewish community so unsettled the Christian establishment that his half-brother spread a rumour he was himself a converted Jew. It cost Pedro his life.

VoiceMap's self-guided audio tours trace the tunnel, the aqueduct wall, and the palace's position at what one guide calls "the centre of power of Seville," flanked by the Cathedral and the Archive of the Indies.