The fantastic works of art take up to three weeks to create and feature 7,000 books.
Artist Alicia Martin, 48, has created a range of designs, including a donut and others pouring out of a window on to the pavement outside.
book donut
One of Alicia Martin's Biografies

She creates the fantastic installations by attaching the books on to a wire mesh.
The mother of two creates the work, called Biografies, in her home city of Madrid, Spain.
She said: "I wanted to show how important books are to culture and education.
"Throughout our lives we order our thoughts and feelings in books, but this is often done in a messy way, like the sculptures.
"Our lives are full of knowledge and thoughts. Books represent that perfectly and are universal objects."