As within almost every city secured by a ring wall, Maastricht expanded rapidly through immigration after 1229. Outside the gates, ribbon development emerged along the feeder roads.
This made it more difficult to defend the city, since the ribbon development obstructed the field of fire. New neighborhoods were thus created, such as the Cloth Weavers' Quarter in front of the Leugenpoort on the marketplace and the quarter of the cloth makers and tanners between the branches of the small river Jeker to the south. Also outside the gates of the first ramparts were grain and oil mills, indispensable tools for food supply. When it appeared that the enemy could stop the Jeker mills by damming the flow, the Maastricht people started using ship mills, whose wheels were set in motion by the water of the Meuse.
The expansion of the built-up area necessitated the construction of a second, wider enceinte as early as the 13th century. This was also built in phases. First a moat with an earthen wall, in the course of the 14th century a stone wall emerged on top of this enclosure. This was probably when the gates were built in masonry for the first time. In Wyck, the need for expansion turned out to be much smaller, because the boundary by an arm of the Meuse stood in the way of possible expansion.

In the first enclosure
1. Helpoort
2. Tanner's Gate
3. Lenculenpoort
4. Tweebergenboort
5. Great Gate
6. Lie Gate
7. Veerlinxpoort
8. OLV Gate
9. St. Maartenspoort
Wyckergrachtstraat
10. St. Maartenspoort
Rechtstraat
11. Hoogbruggepoort
Inside the second enclosure
12. St. Peter's Gate
13. Tongerspoort
14. Brusselsepoort
15. Linden Cross Gate
16. Boschpoort
17. St. Maartenspoort
outside(N-O corner of Wyck)
Loyalty to both its sovereigns, the Church Prince of Liege and the Duke of Brabant (from 1430 the powerful Dukes of Burgundy) and in the 16th century, loyalty to Emperor Charles V and King Philip II, made Maastricht a developing stronghold of the Burgundian-Habsburg expansion in the Netherlands. Not to be forgotten is the influence of the two Chapters on the development of the city as such.