You like to read books? And you have a lot of books that cannot fit on your bookshelf. Then build your apartment around one big bookcase. Here is a great interior design idea by Triptyque Architecture, a small company in Brazil. They have created an interior design of this apartment around one big bookshelf. At first you might think you are in the library, however, it’s great design and round form creates the illusion as you are in spaceship. It doesn’t matter in which room you are you always see the bookshelf.