The aim of the paper is to analyse the geometrical aspects of a series of m
odern paintings and to show the parallel between them and the development o
f modern geometry. It starts with El Greco, offering a geometrical explanat
ion of his painting the figures in a prolonged manner. Further the analogy
between the impressionist way of creating space (in works of Turner, Monet
and Seurat) and the geometrical idea of Cayley to use projective space as a
basis for non-Euclidean geometry is reconstructed. Next the paper describe
s the parallel between the creation of space in the paintings of Cezanne an
d Picasso and the concept of space in algebraic topology. In conclusion, th
e paper deals with the analogy between Kandinski's abstract paintings and t
he set-theoretical foundations of geometry.