The Schengen Area is a visa-free travel zone made up of 26 European nations – 22 EU states and four other nations: Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, and Switzerland.
Citizens from these countries are permitted free movement of travel inside the area's single external border because the internal borders have been abolished.
All visitors outside of the European Union and Schengen Area countries are obliged to carry travel medical insurance while staying in Europe, in order to get their Schengen visa, according to European Law (Regulation EC No 810/2009). In fact, the Schengen visa makes it possible to visit all the countries in the Schengen area and to cross internal borders without further formalities, hence saving time, money and paperwork.
So, if you are traveling into a Schengen country for either tourism of business, you are required to present an insurance certificate for at least 30.000€ for medical expenses, emergency medical evacuation and repatriation of remains.