History museum
Kiek in de Kok and Bastion Passages Museum
54 locals recommend,
Tips from locals
The 1670s-era military tunnels that run beneath Toompea. www.linnamuuseum.ee/en/kiek-de-kok/visitor-info/
The mysterious passages in Tallinn’s earthwork fortifications were built along with the bastions in the 17th and 18th centuries to conceal the movement of soldiers, ammunition, and other equipment from the enemy. They were also used to monitor the enemy’s underground activities of planting mines.
Must have :) The numerous and mysterious tunnels inside the bastions were constructed simultaneously with the building of bastions in the seventeenth and eighteenth centuries. www.linnamuuseum.ee/kok/en/
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Location
2 Komandandi tee
Tallinn, Harju maakond