Its not that difficult when you do it enough and got used to it.
Abstracts are essentially an alternate vision(from how other people see it) the photographer formulate from what he sees. He might pick up an interesting pattern, recognise vibrant colours, contrasting subjects, etc and starts to design a composition out of them.
To people who had seen the building, they can instantly recognise the feature. If not, it would be a creation of colours, shapes, etc. Will they find it interesting? That depends on how you photograph it.
Your challenge is to identify these everyday objects and make them appear extra-ordinary.
