Tallinn’s Old Town is famous for its towers and gates above ground, but the defences have an underground story too. When the city strengthened its walls for the age of artillery in the seventeenth century, engineers built earth bastions on the slopes below Toompea and drove a network of passages through them, so defenders could move under cover between the bastions. The Bastion Passages, reached through the Kiek in de Kök artillery tower, are the surviving part of that network, and they have served as storage, as an air-raid shelter and later as a curiosity for visitors. This guided tour combines a walk through the Old Town with a visit to these tunnels, linking the story of the walls above with the military engineering below. Kiek in de Kök itself, whose Low German name means peep into the kitchen because soldiers in the tower could see into the houses below, is one of the city’s great artillery towers.
How it works
You meet your guide, walk the Lower Town and Toompea for context on the guilds, the walls and the Hanseatic city, and then go below ground in the tunnels. Tunnel visits are guided and group sizes are limited by the passages themselves, so booking ahead is sensible, especially in summer.
What to expect underground
The passages are cool and damp all year round, with low ceilings in places and uneven floors, so wear a warm layer and sensible shoes even on a hot day. People who dislike enclosed spaces should think twice. The tunnels are not suitable for wheelchairs, and the Old Town part of the tour involves cobbles and slopes. It is a good rainy-day choice because a lot of the interest is indoors or underground.
Who it suits
History lovers, families with curious school-age children and anyone who has already walked the Old Town and wants more depth. Combine it with the Great Guild Hall for the city’s wider story, or the KGB Prison Cells for darker twentieth-century history. If you want a purely above-ground walk, the free Old Town and Toompea entries cover that without a guide.
What to expect
The experience
A guided Old Town walk that ends underground in the seventeenth-century bastion tunnels.
Best time
Any season; excellent on rainy or very cold days.
How long
Allow a few hours.
Tips
Dress warmly for the tunnels, wear shoes with grip, and avoid it if enclosed spaces bother you.
Quick picks
- Best for
- History lovers who want to go beneath the surface of the Old Town.
- Families
- Curious school-age children enjoy the tunnels; the passages are low and uneven for toddlers.
- Couples
- A different, atmospheric rainy-day activity.
- Pair with
- The Great Guild Hall or Fat Margaret for more medieval defences.
- Time needed
- A few hours.
Good questions
What are the Bastion Passages?+
Seventeenth-century tunnels through the earth bastions below Toompea, built as part of Tallinn’s artillery-age defences.
Is the tour suitable for children?+
Generally yes for school-age children who like adventure, but the tunnels are low, damp and uneven.
Is it accessible?+
No, the tunnels are not suitable for wheelchairs and the Old Town streets are cobbled.
What should I wear?+
A warm layer and sturdy shoes, because the tunnels are cool and damp year-round.
Does it run in winter?+
Yes; the tunnels make it a good cold-weather or rainy-day option.
