La Canopée is the vast glass and steel roof that crowns the Forum des Halles, Paris's busiest shopping complex and the world's largest urban underground station.

Completed in 2016 at a cost of 213 million euros, it replaced a much-derided concrete structure that had occupied the site since the early 1970s. One tour guide notes the irony in the name: a canopy is a natural space at the top of a forest, yet there isn't a tree in sight.

The land beneath has a longer story to tell. This was once the site of Les Halles Baltard, the great iron market halls that fed Paris for over a century before being demolished in 1971. Before that, it was a medieval cemetery holding eleven centuries of Parisian dead.

VoiceMap's self-guided audio tours use La Canopée as an entry point into that layered past, tracing the site from Merovingian burial ground to royal processional route to the culinary heart of the city.