La Lonja de la Seda, Valencia's Silk Exchange, was built in 1483 at the peak of the city's medieval prosperity. Gothic architecture was reserved almost exclusively for churches at the time, which made its secular ambition remarkable. Rich merchants and the City Council commissioned it as a temple of commerce, worthy of one of the Mediterranean's greatest trading cities. UNESCO calls it an exceptional example of late Gothic secular architecture.

Inside, the Sala de Contratación's spiral columns rise to dizzying heights. Gargoyles line the exterior walls, and an orange garden, planted in the Moorish tradition as an air freshener, fills the inner yard. The building has been in near-constant use for five centuries.

VoiceMap's audio tours trace La Lonja's role in Valencia's commercial golden age, explaining how silk fuelled the city's rise, why Gothic grandeur honoured trade rather than God, and how merchants from Europe and Asia converged here.