"I wanted to go to North Korea and because it was not yet mapped I decided to start mapping so I could at least see how easy it would be to travel within the country, " Sebastiaan van Oyen, who works as a risk manager for a financial trading firm in Sydney, told the BBC.
In a building not far from downtown, organizers literally mapped out about a dozen areas where they planned to choke off central Seattle so that delegates could not reach their meetings.