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About this tour

Get exclusive access to the Blair Street Underground Vaults – the largest system of underground caverns in Edinburgh. Built in the 18th century beneath South Bridge, we’re the only walking tour company with access.

Beneath the bustle of Edinburgh’s Old Town you’ll discover a dark, damp world unchanged since the 18th century. Your expert guide will lead you deep into the Blair Street Underground Vaults, and together you’ll explore their history – including how they became home to the city’s most destitute inhabitants.  

Want to see Edinburgh’s darkest secret? Descend into the vaults, exclusive to Mercat Tours.

It’s a story rooted in Edinburgh’s Georgian past – grand feats of engineering, the expansion of the city, and those who were left behind in its darker corners.

But why were the vaults built? And who used them? Save your questions for your Mercat tour guide, a masterful storyteller who will bring the history of the vaults to life – and talk you through some of the artefacts that have survived.

The walking tour takes 1 hour and 15 minutes, with time at the end in our Discovery Room – complete with 3D model and artefacts.

Book this tour

Tickets Price Quantity Sub Total
Total: £0.00

*Family is 2 adults & 2 kids (5 - 15yrs). You need to be over 5yrs to join our tours

*Concession is seniors & students with valid ID

Your Edinburgh tour at a glance

Book this tour if you'd like to...

  • Get exclusive access to the city’s oldest, deepest vaults
  • Discover secrets and stories of Edinburgh’s underworld
  • Enjoy a personal tour in a small group
  • See and touch 19th century artefacts
  • Visit our Discovery Room with 3D model and display

Time, length & age

Daily: 2pm & 4pm

1 hour 15 minutes

Children over 5 years of age are very welcome! You do need to be over 5 years old to join our tours.

Meeting point and route

Start: Mercat Cross, High Street (currently under renovation)

Finish: Blair Street Underground Vaults, Blair Street, off Hunter's Square

award award

Trust Mercat to show you a side of Edinburgh others don’t see. We have 5 stars and a 91% rating from VisitScotland. We’re also one of the top 11 attractions in Scotland. Our Awards