Lyon Botanical Garden

This guide to Lyon's Botanical Garden starts with a Grande Serre built in 1867 that lasted barely a decade before the warm, moist air meant to nurture its palms began rotting its own wooden frame. You'll hear how the city brought in the engineer Domenget to tear it out and rebuild it in iron and glass between 1877 and 1880, using the same technique then going up in Paris's exhibition halls. Look up at the ribs of the dome above you as you listen.