Your first option is to visit as a tourist. This allows you to stay in the entire Schengen zone, including Portugal, for 90 days in any rolling 180-day period. That could be 90 days straight in a ...

Romania and Bulgaria scrapped land border controls to become full members of the European Union's Schengen free-travel area ...

Portugal, Slovakia, Slovenia, Spain, Sweden and Switzerland have all acceded to the Schengen Agreement and are thus Schengen states. Holders of Schengen visas (text on the visa reads “valid for ...