Answer:
Features traditionally hidden away are used as visual design elements.
Explanation:
This is one of the characteristics that makes the Georges Pompidou National Center of Art and Culture a Modernist building. Modernist architecture has a few very specific characteristics. It tends to revolve around the use of "modern" construction materials, such as glass, steel and reinforced concrete. It also tends to focus on function. In terms of aesthetic, it favours minimalism and rejects ornamentation.