Horizontalen (Horizontals) 1981 6'
In Need Of Space 1982 5'
De Hemel Is Vierkant (Heaven Is Square)
1985 10'
Four Moves 1987 7'
Nacht-Licht (Night-Light) 1993 13'
Space-Modulation 1994 1'
Forest-Views 1999 17'
Zwerk (Firmament)…
From The Exterior 1970 7'
Song For Four Hands 1970 3'
Penelope 1994 10'
Sculptures For A Windless Space 1995 11'
Convalescing 2000 3'
Appearances 2000 22'
Quay 2003 6'
Ariadne 2005 12'
Stretto 2005 6'
Portraits 1972 6'
A Touch…