Who does not need a visa
Citizens of all countries of the European Union, Switzerland, Croatia, Israel, Japan, Australia, New Zealand, most of the countries of North and South America and some other countries do not need a visa, only a valid passport is required to enter Spain. In case of doubt please contact the Spanish Consulate or Embassy well in advance before departure.
Visa-free travel is allowed with a biometric passport for citizens from the following countries: Albania, Bosnia and Herzegovina, Macedonia, Montenegro, Serbia.
Who needs a visa
Travellers requiring a visa can travel freely throughout the Schengen zone for three months with a Schengen visa issued by any Schengen country. Obtaining a visa entitling you to visit one Schengen country automatically entitles you to travel to and from all the other Schengen countries, too. Current member countries of the Schengen treaty are Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden and Switzerland.
Further information about visa regulations and Schengen visas can be found on the website of El Ministerio de Asuntos Exteriores y de Cooperación:
Letter of Invitation and Visa
To receive an Invitation Letter for your Visa application or other purposes, the meeting registration must be completed and the conference fee must be fully paid. Online registrants will be prompted to create a Letter of Invitation (only available to fully paid registrants). Registrants using paper form can request a Letter of Invitation from firstname.lastname@example.org.
It is very important that registrants needing visas apply early enough to complete the visa application process. We recommend that travelers apply as soon as they possibly can after affirming their ability to attend the conference. It is the responsibility of the participant to obtain a visa if required.