Abstract: A three-dimensional structure (1), which is made substantially of panel-shaped material blanks (3, 4, 5) is provided wherein adjacent material blanks are or can be each connected to one another by mutually opposing sides. At least two material blanks (3, 4, 5) which adjoin one another by opposing narrow sides can be detachably connected to one another without glue by at least one connection fitment (6) which (6) holds together the mutually adjoining narrow sides of the material blanks (3, 4, 5) by at least one screw connection.