Living in two-storey house can be a problem when it comes to the stairways. They have to be designed very carefully because if not they may cause you serious problems – for example if they are too high or too steep. A good decision of a problem like this was invented by Reinier de Jong Design. The name of the staircase is DUB. These stairs are not only a piece of art but also very functional – it does not matter if they are leading you to the top floor terrace or just to the next floor – the design is very stylish and useful. The material used in their creation is aluminum and glass balustrade.