Leadenhall Market sits on ground that has fed London for nearly two millennia.

Beneath Sir Horace Jones's Victorian ironwork, which took its cues from Milan's Galleria Vittorio Emanuele II, lies something even more remarkable: the remains of Roman Londinium's basilica, the largest building of its kind north of the Alps. Pop into the barber shop, Nicholson and Griffin, and they'll let you descend to their basement, where a brick arch from that ancient civic centre sits preserved behind glass.

The market's curious name comes from a fourteenth-century mansion with a lead roof, so unusual for its time that it became the defining feature. You can still spot iron hooks above the shop fronts where poultry once hung when this was the city's premier meat market. Film fans recognise the ornate passages as the route to the Leaky Cauldron, where Hagrid first led Harry Potter into the wizarding world.

VoiceMap's self-guided audio tours trace these layers of history, from Roman foundations to Harry Potter film locations, revealing how a medieval market with a metal-roofed mansion became both a Victorian architectural showpiece and cinematic magic.