Lesene

A lesene, also called a pilaster strip,[1] is an architectural term for a narrow, low-relief vertical pillar on a wall.

[2] It is typical in Lombardic and Rijnlandish architectural building styles.

[3] Lesenes are used in architecture to vertically divide a façade or other wall surface optically.

However, unlike pilasters, lesenes are simpler, having no bases or capitals.

Their function is ornamental, not just to decorate the plain surface of a wall but, in the case of corner lesenes (at the edges of a façade), to emphasise the edges of a building.