Holders of Schengen visas (text on the visa reads “valid for Schengen states” in the language of the issuing country) may spend up to 90 days in a given 180 days period in the Schengen area ...

and for visitors from other countries to travel to all Central Asian countries with a visa to one country, just like a Schengen visa.” ...

to become partial members of the European Schengen area of free movement, which allows more than 400 million individuals to move across member countries without being subject to internal border ...