In an open room in the Museum of Modern Art in Bologna, amidst plain white walls, a vertiginous tower stretches to the ceiling. From a distance, it appears to be made of thin multicolor bricks. They're actually thousands of books:
The book tunnel is an installation called Scanner, by Slovakian artist Matej Krén, intended to fill its audience with awe and confusion. The awe-factor is apparent, and once inside the structure, the confusion is heightened by mirrors which multiply the already-dizzying number of volumes.