The East Gate
Visit to the tourist attraction of Sweden - the part of Visby city wall - The East Gate: was the gate for the road leading to eastern and central Gotland and it was possibly an important communications route from the outset of habitation in Visby.
Wikipedia: Over the old gate a five floor tower was erected. Three of the floors lacked openings towards the town. In the room above the gate, there was both a fireplace and a privy, which shows that the gate was permanently manned. During the turbulent times of the 1710s, the tower was armed with cannons.