Kiek in de Kök is an artillery tower built between 1475 and 1483. It is 38 m high and has walls 4 m thick. Cannon balls dating back to 1577 are still embedded in its outer walls. Compared to the other Tallinn towers Kiek in de Kök was predominant in its fire power, due to its 27 embrasures for cannons and 30 for handguns
Kiek in de Kök (low German Peep into the Kitchen ) is an old German language nickname for towers, mainly those which were parts of town fortifications. They gained the name from the ability of the tower occupants to literally see what's cooking in the kitchens of nearby houses.
Due to the history of the Hanseatic League and the Teutonic Order, also towers far outside modern Germany bear this name, like in Gdańsk and Tallinn.
20th century restoration work saw the tower and surrounding area returned to a more historical look. The tower now serves as a museum and photographic gallery.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.