Completed in 1962, the modernist building housing the Royal Institute for Cultural Heritage (KIK-IRPA) was the first in the world to be specially designed to facilitate the interdisciplinary study and restoration of artworks. Its modular reinforced-concrete frame construction was designed by architect Charles Rimanque. Its six floors are linked by a spectacular spiral staircase consisting of steps supported by a winding stringer. The staircase is a true masterpiece of its genre, and has, among other things, served as a backdrop for a captivating scene in Michel Gondry’s 2013 film Mood Indigo. Some of the building’s rooms, such as the director’s office and the meeting room, still have their original furniture, providing a fascinating insight into modernist interior design as well as affording breathtaking views of the city. (Protected since 6 July 2006)