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| Tallinn's Kiek in de Kök was the most powerful cannon tower in 16th-century Northern Europe. It was built in the latter part of the 15th century, had a diameter of 17 meters with walls 4 meters thick. |
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| Tallinn's Kiek in de Kök was the most powerful cannon tower in 16th-century Northern Europe. It was built in the latter part of the 15th century, had a diameter of 17 meters with walls 4 meters thick. |
