The majority of work was carried out on the castle's keep, which its owners and Czech Republic's national heritage institute wanted to be preserved as a ruin.
Atelier-r created a series of glass roofs that sit below the original walls so they can not be seen from outside the building to enclose some of the rooms.
Along with the new roofs, the studio added various stairs, bridges and platforms, all made from Corten steel, to create a visitor route through the ruins.
The weathering steel elements allow visitors to see the upper levels of the castle that were previously inaccessible, with bridges passing through rooms and passages built alongside the battlements.
Atelier-r chose to use the orange Corten steel so that the additions made to the ruin would be clearly identifiable.