Mexico City's Postal Palace looks, at first glance, like it belongs in Florence or Madrid rather than the Mexican capital. That was precisely the point. Dictator Porfirio Díaz commissioned Italian architect Adamo Boari to design the building, completed in 1907, as part of a deliberate campaign to recast Mexico City in a European image in time for the centenary of independence.

The result is gloriously contradictory. The exterior lamps echo Gothic gargoyles, the facade blends Renaissance and Baroque references, and inside, an ornate iron staircase rises beneath a soaring steel-and-glass ceiling that looks closer to a Victorian railway terminus than a post office. New industrial materials, old decorative instincts.

VoiceMap's self-guided audio tours use the Postal Palace as a window into the Díaz era, connecting its eclectic architecture to the wider story of a city that dressed itself in European clothes while its revolutionary reckoning was already approaching.