St Olaf’s Church In Tallinn is thought to be from the 12th century, though the exact date is unknown. Its first written mention was in 1267. Interestingly, it is thought that at one time, between 1549-1625, this was the tallest building in the world. More interestingly, during the Soviet Union the tower was used by the KGB for surveillance.
Photo Challenge: Look up
Our Shadows Will Remain 
Facinating! Next time I will visit this Tower 😀
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There is a small charge and you can go to the top to walk around on the roof. Well worth it.
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I think I tried to go a few weeks back but it was still closed 😦
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It was a few years ago when I went up there. The stairs were hard work after a night on the boat.
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