Impossible object

Circle in circle kinetic mechanism

Impossible figures

Impossible figures, 不可能図形

How to make bolt through wood

Impossible object of Oscar Reutersvärd, 不可能図形

Impossible objects

Impossible figures Невозможные объекты

Impossible objects

Impossible shapes. 不可能立体の作り方　錯視を利用

Impossible object illusion 不可能図形

Undecidable figure of Oscar Reutersvärd

Impossible structure

Impossible figure illusion

Impossible figure