Blair Street Underground Vaults: The Complete Guide

When you walk down South Bridge in Edinburgh’s Old Town, you are actually walking across a 19-arch viaduct spanning a deep valley. While the bridge above is lined with shops and cafes, the arches below hide a dark, damp, and complicated history. These are the Edinburgh Vaults, and the deepest, most extensive section is known as the Blair Street Underground Vaults.

Built in 1788, these subterranean chambers were originally designed as storage space for local merchants. But due to poor planning and a lack of waterproofing, they quickly flooded. Legitimate businesses moved out, and the city’s poorest residents, illicit taverns, and criminal enterprises moved in. Today, the vaults are completely sealed off from the public unless you join a guided tour.

This guide breaks down exactly what you will see down there, how to choose between the historical and haunted tickets, and practical tips for navigating the uneven, lightless corridors.

How to Visit Based on Your Travel Style

The Blair Street Vaults are strictly accessible by guided tour. Because the environment is rugged and the tour themes vary wildly, you need to pick the right approach for your group.

• For the Time-Poor: If you only have a weekend in Edinburgh, book the standard 1-hour Underground Vaults Tour. It gives you a solid overview of the history without eating up half your day. Tours depart frequently from the Mercat Cross on the Royal Mile.
• For Families: The vaults are dark, damp, and occasionally feature jump-scare stories depending on the guide. If you are traveling with children, avoid the late-night terror tours. Stick to the daytime historic tours. Note that children under 5 are generally not permitted on these tours due to safety regulations regarding the uneven floors and lack of lighting.
• For Budget Travelers: Exploring the vaults is generally cheaper than visiting The Real Mary King’s Close. To get the most value, look for combo entry passes that include a guided walk of the Royal Mile or Greyfriars Kirkyard alongside vault access.

5 Architectural & Cultural Highlights

The Blair Street Vaults are not a polished museum. There are no glass display cases or interactive touchscreens. The appeal lies in the raw, unfiltered state of the chambers. Here is what to look out for when you descend.

1. The Engineering of the South Bridge Arches

When you first enter the vaults, look up. You will see the massive limestone blocks that form the arches of South Bridge. The bridge was an engineering marvel in the 18th century, designed to connect the Old Town to the expanding university district. However, the builders failed to waterproof the structure. As you walk through, you will notice stalactites hanging from the ceiling—this is calcium carbonate leaching from the limestone due to centuries of water seepage. It is a constant, physical reminder of why the vaults failed as commercial spaces.

2. The Tradesmen’s Workspaces

In the early years (around 1790), the upper levels of the vaults were used by legitimate tradesmen. During your guided tour, guides will point out the remnants of a cobbler’s workshop and a wine merchant’s storage area. You can still see the original fireplaces built into the stone, which were desperately needed to combat the biting cold and dampness.

3. The Illicit Taverns and Smugglers’ Dens

As the conditions worsened and legitimate businesses abandoned the vaults, the space was taken over by Edinburgh’s underworld. The deeper you go into the Blair Street section, the darker and more claustrophobic the rooms become. These lower chambers housed illicit whisky distilleries, illegal taverns, and gambling dens. The lack of natural light and ventilation meant the air down here would have been thick with smoke, sweat, and raw sewage.

4. The Double Vault and the Wiccan Circle

One of the most famous rooms in the Blair Street Vaults is the Double Vault. It is notoriously cold and is the focal point for many of the ghost tours. Interestingly, in the early 2000s, a local Wiccan coven was granted permission to use this space for rituals. They built a stone circle in the center of the room to help “cleanse” the negative energy. The circle is still there today, and tour guides strictly instruct visitors not to step inside it.

5. The Rubble of Rediscovery

By the mid-19th century, the vaults had become a public health hazard and were filled in with rubble to force the inhabitants out. They were completely forgotten until the 1980s when former Scottish rugby international Norrie Rowan discovered a tunnel leading into them. As you walk through, you will see massive piles of oyster shells, broken bottles, and animal bones—this is the original 19th-century trash that was excavated by hand to clear the pathways you walk on today.

Keep Planning: If you are fascinated by Edinburgh’s underground history, check out our comparison guide on Mary King’s Close vs. Blair Street Vaults.

Ticket Options: History vs. Haunted

Because multiple tour operators have access to different sections of the South Bridge vaults, choosing a ticket can be confusing. The Blair Street section is exclusively managed by Mercat Tours, but you can book their inventory through major platforms.

Here is a breakdown of the two most popular ways to see the vaults.

The Late-Night Terror Tours

If you are specifically looking for a scare, there are late-night options like the Terror Tour or the Evening Ghost Tour with Whisky. These tours lean heavily into the macabre, discussing the Burke and Hare murders (though there is no historical proof they used the vaults) and local ghost sightings. The whisky tours end in a candlelit room where you are served a dram of Scotch to calm your nerves.

Logistics: Getting There & Meeting Points

The Blair Street Vaults do not have a traditional front door or a massive neon sign. Because they are underground, you must meet your guide at a designated above-ground location.

• Meeting Point: Almost all tours for the Blair Street section meet at the Mercat Cross, the large stone monument located on the Royal Mile, right next to St Giles’ Cathedral.
• The Descent: From the Mercat Cross, your guide will walk you down the Royal Mile, turn onto Blair Street, and unlock an unassuming black door that leads down a steep flight of stairs into the vaults.
• Public Transport: The closest tram stop is Princes Street (a steep 10-minute walk up the Mound to the Royal Mile). Numerous buses (Lothian lines 3, 7, 8, 29, 31) stop on South Bridge, just a two-minute walk from the Mercat Cross. See our Edinburgh Bus Guide for routing.

Local Survival Tips for the Vaults

The vaults are an authentic, unpolished historical site. They are not built for modern comfort. Here is how to prepare:

1. Wear Flat, Sturdy Shoes: The ground in the vaults is uneven, rocky, and often slick with moisture. Heels, sandals, or smooth-soled dress shoes are a terrible idea.
2. Bring a Layer: The temperature underground hovers around 10°C (50°F) year-round. Even if it is a sweltering August day outside, it will be chilly and damp in the vaults.
3. Claustrophobia Warning: There are no windows, the ceilings in some chambers are low, and the only light comes from your guide’s flashlight and a few dim emergency bulbs. If you suffer from severe claustrophobia, you may want to skip this and visit the Edinburgh Dungeon instead, which is more spacious and theatrical.
4. No Bathrooms: There are no toilet facilities inside the vaults. Use the public restrooms on the Royal Mile or grab a coffee at a nearby cafe before your tour begins.
5. Avoid the Fringe Crowds: If you are visiting in August during the Edinburgh Festival Fringe, the Royal Mile will be shoulder-to-shoulder with people. Give yourself an extra 15 minutes just to navigate the crowds to reach the Mercat Cross meeting point on time.

Where to Stay Nearby

The vaults are located right in the heart of the Old Town. Staying in this neighborhood puts you within walking distance of the vaults, Edinburgh Castle, and the National Museum of Scotland.

Use the map below to find hotels and apartments near South Bridge and the Royal Mile.

Frequently Asked Questions