I think you'd be surprised. It's not just about the buildings. The Royal Family interests people. You might find it surprising, I do too really but I also get it, it's British history happening right now. People around the world are interested in British history. People look at our island on a map and think "they had the world's biggest empire?". We have a long and interesting history. Many foreigners, in particular Chinee and Japanese, probably know more about British history than I do. They find us interesting and respect our colonial, industrial and scientific achievements. They enjoy learning about it. The Royal Family represents a living relic of that history. That definitely brings a boost to tourism.