The North Gate (Norderport in Swedish) is the best preserved gatehouse in the city wall of Visby. It provided one of the three main entrances into the city from its hinterland. The other two are The South Gate (https://reveal.world/story/the-south-gate) and The East Gate (https://reveal.world/story/the-east-gate). All rural produce was liable to market tolls, paid at the toll booths in the gatehouses. This gateway was built around 1280 to reinforce the other simpler and much older gate. It was equipped with double timber gates, and a portcullis on the outside. The room above the archway once had a fireplace, indicating the presence of a guardforce in winter time. The holes and sockets beneath the battlements indicate that the tower was furnished with a brattice and a roof. 

The North Gate is located in a strategic position and therefore was built with strong dimensions to gain great defensive power. The outer wooden gates were reinforced with a trapdoor. The trapdoor was lowered in case of a threat. The trapdoor consisted of strong iron-clad logs. Traces of an opening for hoist ropes or chains can be seen under the grating's scope arch. Water could be poured through the opening if the enemy tried to set fire to the gates. In the outer door frames there are iron loops between which there was probably a stretched iron chain. In peacetime, the gates were open during the day and only locked with the chain. 

The battle days of the North Gate are long gone, but it is still the main thoroughfare leading from the countryside in the north into the town center - just as in the medieval times.