Walking through Leadenhall Market feels like stepping into a Victorian time capsule, though this London gem has been trading for far longer than its ornate architecture suggests. The current building dates from 1881, designed by Horace Jones with its distinctive wrought iron and glass structure painted in green, maroon and cream. But markets have operated here since 1321, making it one of the oldest in the city.

What strikes you first is how the light filters through those enormous glass panels overhead, casting patterns across the cobbled floor. It's no wonder filmmakers chose this spot for Harry Potter scenes – the Leaky Cauldron entrance was filmed right here, and you can see why they picked it. The Gothic Revival details and soaring arches create an almost magical atmosphere that feels removed from the bustling financial district outside.

The Romans knew this area well. Beneath your feet lie the remains of ancient Londinium's forum and basilica, the very heart of Roman administration. It's fascinating to think that while the setting has transformed completely, the essential purpose – people gathering to trade and socialize – remains unchanged after nearly two millennia.

These days, when you visit Leadenhall Market, you'll find a mix that works surprisingly well. Traditional cheesemongers and butchers operate alongside modern cafes and wine bars. The Lamb Tavern, which has been serving drinks since 1780, still draws insurance workers from nearby Lloyd's of London for their after-work pints.

The market opens weekdays from 10am to 6pm, and mornings tend to be quieter if you want to appreciate the architecture without crowds. The contrast between the delicate ironwork above and the practical cobblestones below captures something essentially London – grandeur built for everyday use.

Discover all the secrets of Leadenhall Market with our complete London audio guide and learn about the layers of history hidden beneath this remarkable Victorian structure. Dick Whittington, the legendary Lord Mayor, built a stone market here in the 15th century, which survived even the Great Fire before being replaced by the current building.

Standing here, surrounded by office workers grabbing lunch and tourists admiring the ceiling, you get a real sense of how London layers its history. Ancient Roman foundations, medieval trading traditions, Victorian engineering, and modern city life all occupying the same few square meters of Gracechurch Street.