The strong differentials on both sides of the Belgian-Luxembourger border, both in terms of salaries and housing prices, have stimulated for more than two decades the cross-border links between the two countries. Thus, whereas in 2008 nearly 40,000 residents of Belgium crossed the border each day to work in the Grand Duchy, between 2001 and 2007, more than 2,600 residents of Luxembourg went to live in Belgium, though they remained employed in Luxembourg. These cross-border movements, whether involving daily activities, such as journeys to work, or life cycle, such as moving home, are an indication of the influence of the border on spatial and social interactions.