A small or larger house build arround a portal. Some “shacks” are more like temples others are in fact an actual shack. Mostly depending on the type of portal, city (area) wealth and the social status of portals in a city. There are some portals considdered to be to dangerous to ever be used and surrounded by a brick shack without an entrance. Portal shacks are always decorated in their portal collor. If the portal stands in a region that thank a god for the portal you see decorations of the deity as well.