The paintings are oil and wax on canvas, and they mark Delaunay's turn towards abstraction and interest in color.

He also produced his book Concerning the Spiritual in Art, which outlined his ideas on abstraction, and which Delaunay read with great interest.

As opposed to the cubists, who worked in an earth-toned palette, Delaunay turned to the use of vibrant colors, which were characteristic of his abstract paintings, including those in the Windows series.

"[3] Apollinaire was also responsible for coining the term 'orphism' which is an artistic movement that Delaunay and his Windows series have been closely associated with.

The paintings are intended to represent the view of Paris out a window, and upon close inspection, the viewer may be able to make out the figure of the Eiffel Tower.

He wanted to demonstrate how visual perception also relies on previous knowledge, hence the reason why the Eiffel Tower is apparent in the paintings of this series.

Even if these paintings represent exterior reality, they are however considered as abstract entities because the object has lost its importance.