Strange room, isn't it? It is not in reality!

Stretches one's imagination.

Stretches the imagination

Stripes are not sloped.

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Surrounded figures are equal in size.

Swans being watched.

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The act of columns.

The act of Cubes. (The image is Copyright A. Kitaoka)

The blue and the green lines are the same lenght.

The bookshelf.

The building is straight.

The circle is perfectly round.

The horizontal lines in the middle are not sloped.

The lines are not curved.

The lines are parallel to each other.

The lines are parallel to each other.

The lines are parallel to each other.

The lines in between are very straight.