On a 92 are big estate on the northern rim of the Black Forest two residential houses and a pool came into being within a landscape garden. On the exposed topography located on a slight slope, different topologies are explored. The inhabited and uninhabited buildings, gardens of different sizes provide the ground for the quest of classical and unknown geometric topologies. The calm search for the „quinta essentia“ of an elegant classical form leads from the tetrahedron to the artificial landscape. A classical form which does not deny its revolutionary roots and formulates a poetic science.