More recently those had become secondary functions, and the Vatican had 
programmed the building's foundation to extrude many more stories. The Vatican 
had a number of serious ethical concerns about nanotech but had eventually 
decided that it was okay as long as it didn't mess about with DNA or create 
direct interfaces with the human brain. Using nanotech to extrude buildings was 
fine, and that was fortunate, because Vatican/Shanghai needed to add a couple 
of floors to the Free Phthisis Sanatorium every year. Now it loomed high above 
any of the other waterfront buildings.