Tsar palace Kostroma (height 65 cm) is decorated with geometrical motifs. Actually the Russian cathedrals - and specially the palaces for the tsar in cloisters - were my first inspiration for my geometrical work. The outside of those palaces is decorated with geometrical figures, f.i. squares divided in four triangles all with a different color. The Palace consist of loose parts so that they can be lifted from the kiln at 800 °C.