WorldCon 75 in Helsinki | ScienceBlogs
The 75th World Science Fiction Convention took place in Helsinki and seems to have had the second-highest attendance ever: more than 7000 people in the Messukeskus convention centre, 2000 of whom had (like myself) never attended a WorldCon before. There were 250 programme items only on the Friday between 10 am and 10 pm, so there is no way that I'll be able to tell you everything that went on.
Source: scienceblogs.com