Tallin

Once upon a time, from 1549 to 1625 to be exact, this 13th-century church was the tallest building in the world. But its gigantic, 159-metre spire, which was probably meant to act as a signpost for approaching ships, also turned out to be a very effective lightning rod. Throughout the church's history its steeple has been hit repeatedly by lightning, completely burning down the structure three times.
Nowadays its smaller, 124-metre steeple still dwarfs most of Tallinn’s buildings and remains an important symbol of the town. From April to October, visitors can make the vigorous climb to the top of the stone portion of the tower for magnificent and dizzying views of Old Town, Toompea hill and the port.
The church itself dates back to at least 1267 when it is thought to have served a group of Scandinavian merchants who settled in the area. Various legends insist the church got its name from either the giant or the mysterious stranger who built it, however it was in fact dedicated to King Olaf II of Norway.
Its current shape and size were set in the 16th century. Inside are high, vaulted naves and a historicist interior design that dates to after the 1830 fire.

All of the above was taken from here as it's really nicely written ;) Card arrived from a friend who was there for holidays. He was really impressed and he said that Tallin is a city that I really should see :) Hopefully one day it will be possible.