The Real Mary King's Close

The Real Mary King's Close is the Old Town turned inside out. In the seventeenth century the Royal Mile was lined with towering tenements, and the narrow closes that dropped steeply off it were full streets in their own right, with homes, workshops and shops stacked one above another. When the Royal Exchange — now the City Chambers — was built across the top of several closes in the eighteenth century, the upper storeys were demolished and the lower ones were kept as foundations, sealing a section of the old streets beneath the new building. What survives is Edinburgh's only preserved seventeenth-century underground street, and the way to see it is on a fully guided tour of about an hour, led by costumed characters drawn from people who really lived here. The tour follows the close downhill through a sequence of rooms and houses — a cramped family home, the dwelling of a successful merchant, the space where a gravedigger and his family lived — and tells the hard, funny and grim stories of daily life before modern sanitation: the chamber pots emptied from upper windows, the overcrowding, the plague outbreaks that swept the city, and the legends that grew from them. Ghost stories are part of the folklore, and one room has a famous pile of toys left by visitors, but the guides lean toward social history more than cheap scares. It is dark, uneven and involves stairs, so it is not suitable for children under five and may be challenging for some visitors with mobility needs. Tours run daily from morning until evening, often later in summer, and the popular slots sell out — book online and arrive ten minutes before your time on the Royal Mile opposite St Giles' Cathedral.

The close takes its name from Mary King, a seventeenth-century merchant and widow who lived and traded here, and the tour uses her and her neighbours to show the Old Town as a crowded, vertical city. Edinburgh was squeezed onto its ridge by the Flodden Wall and the steep valleys on either side, so it grew upward instead of outward, with rich and poor living in the same tenements, separated only by the floor they lived on. By the time the New Town was built across the valley, the wealthy had moved north, and the old closes sank into overcrowding and disrepair — which is part of why the city was happy to build over them.

What the tour is like: groups move together with the guide, so you cannot linger or wander off, and photography is restricted underground. The air is cool all year, so bring a layer even in summer. The floors are uneven, and the route involves steps and slopes; anyone with mobility concerns should check the accessibility information and contact the attraction before booking. Characters are theatrical but the tone suits most ages from about eight upward; younger children can find the dark rooms and plague stories intense. Special tours appear through the year, including lantern-led evening tours and themed history tours, and these sell out quickly.

Plan it as the centrepiece of an Old Town walk. The entrance is on Warriston's Close, just off the High Street, across from St Giles' Cathedral and a short walk downhill from the castle. A good sequence is the castle in the morning, lunch on the Mile, St Giles' in the early afternoon and Mary King's Close afterwards, when the light outside starts to fade — the contrast between the bright cathedral and the dark underground street is the best way to understand how layered Edinburgh is. Evening tour slots also make a good alternative to a ghost walk if you want history with your atmosphere.