We climbed a long stretch of steps to the underground tunnels to learn about the history of Tallinn. There was a lot to see and a good audio guide with ample information. Some parts were a bit scary. The steps are a bit demanding for older people.

It’s an important part of the Town Wall. It was built in 1475, its height 38 metres, the walls are 4 metres thick. This funny name means that the defenders of the tower could peek into the kitchens of the lower town. Now we can see some cannonballs from 1577 in the walls. Nowdays it houses the Tallinn City Museum's exhibition on the history of the city wall. I think it’s worth a visit.

On Tallinn Day (15th May) this museum is only 1 euro, making it really good value. The Bastion passages are a long tunnel, which you then have to return along to exit. There are some steep steps early on, uneven ground at many parts and some low headroom parts. My 1.6m tall wife was having to duck sometimes. The exhibits are interesting if sometimes a little repetitive. The tower started with modern steps but nearer the to the original steep steps were all that were available. Free lockers did help with not having to carry your stuff all the way round.

This was very cool. I loved the old towers. The whole walls of the city are awesome. Adding a museum made total sense. The whole city is great and the walls towers and their story is great.

Was an interesting exhibition - this is a defense tower from the 15th century. I especially liked to imagine how life could actually have happened in the 15th-16th centuries. Teenage children were deeply impressed by the bastion tunnels.

This venue is well worth a visit. The various displays are well put together and educational. The highlight for me was the tunnels that served various purposes over time. A very good way to escape either a rainy or blistering hot couple of hours.

Unusual and interesting museum. Fascinating to see the different ways the bastion tunnels have been used over time, from their original defensive purposes, to bomb shelters, storage, a punk hang-out, homeless accommodation and now a museum. We picked up bits of info while we walked through. The towers have displays ranging from military defence to the life and times of families and cafés during the 20th century in Tallinn. Good views from various points in or between the towers. Here as elsewhere, we noticed that there are several references to the period of occupations etc but the USSR is almost never referred to by name. NB in both the tunnels and the towers, many of the steps are rough and uneven. Probably not suitable if you feel unsteady on your feet. There's a small café up between the towers where we enjoyed coffee and pastries (no savoury eats).

Well worth a visit for an insight into local history. Walking the tunnels was fascinating with lots of information and displays on the way (in Estonian & English). Of note if you are in Tallinn on first Sunday of the month admission to this and some other Tallinn City museums are free.

We had only a couple of hours in Tallinn but the towers were well worth the visit! We didn't go into the bastions as we didn't have enough time but maybe next time! We really enjoyed the views from the tower and the bridge connecting the towers.

The Bastion Passages were really good and well worth the visit - lots of interesting history from different periods of Tallinn's history, including medieval, wars, occupation and more recent times. The Towers were also good, although were not as interesting as the passage part of the museum. We were also lucky to visit on the first Sunday of the month, when the museum is free - if you are visiting Tallinn early in the month it is worth looking out for this offer.