The Buenos Aires Metropolitan Cathedral doesn’t look much like a cathedral. Its columns resemble a Greek temple, or a government building, and that was the point. The front went up after independence, under a president who wanted the state, not the church, to take centre stage.

Inside, General José de San Martín, El Libertador, has rested since 1880. Three stone angels, one each for Argentina, Chile and Peru, stand guard, alongside grenadiers in the uniform of his Andean regiment. The cathedral’s previous archbishop, Jorge Bergoglio, is now Pope Francis.

VoiceMap’s self-guided audio tours use the cathedral to show how a church came to dress as a government building. They also read its pediment, where Joseph reunites with his brothers, as a plea for national unity.