However, there is often no clear demarcation between the different building forms, and many churches, in the course of their construction history, developed from a combination of different types.
Early aisleless churches were generally small because of the difficulty of spanning a large, open space without using pillars or columns.
Starting in the Renaissance, the development of new technologies and better building materials allowed larger spaces to be spanned.
Aisleless churches are generally aligned longitudinally so that the altar and choir are located at one of the narrower ends and are facing east.
[1][2] The Norwegian long church usually includes a narthex/vestibule in a separate section, often in a somewhat lower and narrower room attached to the main body and traditionally in the western end of the building.