Gunpowder tower in Prague old town, the black gothic spires up to 65 meters, is one of the landmarks of Prague. Gunpowder tower is located was one of the earliest 13 gates in Prague''s old town, in the 15th century when built on the ruins of the gate tower, it still is the starting point of the road to the coronation of the castle. Historical background in the 16th century when the king let the warlock study alchemy, the powder tower was used as a powder magazine in the 17th century, gunpowder tower hence the name.