The Schengen Area is an association of 28 countries which have joined so as to foster the liberty of motion and the movement of people and goods. An passport from any member country is valid throughout the whole area and people out of any Schengen region country may utilize their passports to enter any other member nation. If you are planning to visit Luxembourg and in case you have a Schengen visa, then you can use it to travel the area and to get about.