When arriving in the Netherlands, all attendees must present a valid passport with the appropriate visa (if required). It is not possible to apply for a visa at the border. Attendees who need to apply for a visa must do so in their country of residence.
The Netherlands is part of the Schengen Area. The following website shows which passport holders need to apply for a Schengen visa and provides information about the application process.
If the nationality of the passport holder is not listed, a Schengen visa is not required to enter the Netherlands. The Metropolis The Hague project team advises attendees to obtain their visa well in advance. Applying for a visa is possible as of three months before the start of the congress. Please keep in mind that issuing a visa can take up to 14 days. Addresses of Dutch embassies, consulates and other representations can be found at this website.