Understanding the Schengen Area and its Visa Requirements for Travelers

Many people know about the Schengen Area as a region in Europe where you can travel between countries without border checks, like traveling between different states in the U.S. But what exactly is it, and what does it mean for travelers, especially when it comes to visas?

The Schengen Agreement, which formed the Schengen Area, includes 27 European countries. For citizens of countries that don’t have a visa-free travel agreement with these Schengen states, a Schengen visa is generally required for short stays, typically up to 90 days within a 180-day period. This visa allows you to travel across all the countries within the Schengen Area with just one visa.

What’s important to know is that the first country you enter within the Schengen Area is usually where you’ll go through immigration control. After that, moving between other Schengen countries generally doesn’t involve border checks. This system is designed to make travel smoother.

Recently, there have been updates to border management within the Schengen Area. For example, the Entry/Exit System (EES) is a new digital border management system. It started rolling out in October 2025 for all Schengen countries, including Portugal. The goal of EES is to modernize and speed up border checks, prevent illegal stays, and enhance security across the Schengen zone. This system will apply to non-EU nationals, including Korean citizens, who visit for short stays (visa-free or with a short-stay visa).

It’s also worth noting that not all European countries are part of the Schengen Area, and some countries that are geographically in Europe require separate entry procedures. For instance, the UK has its own entry requirements, such as the Electronic Travel Authorisation (ETA), which is separate from the Schengen ETIAS (European Travel Information and Authorisation System) that will be required for visa-exempt travelers to many other European countries.

When applying for a Schengen visa, it’s usually best to apply through the embassy or consulate of the country where you plan to spend the most time, or your first point of entry if your itinerary is evenly split. The application process itself can take some time, and it’s wise to start well in advance of your planned travel dates. While the idea of seamless travel is appealing, understanding the visa requirements and any new systems like EES is crucial to avoid any unexpected issues upon arrival.