In 1972 Alkmaar acquires an interesting group of houses. A number of high-rise buildings and a sports hall. The complex is called Casa Rosa. It is the home not to Alkmaarders but to Spanish migrant workers at Hoogovens, who are picked up and returned every day by their own Hoogovens coach service. It is the first generation of immigrants that Alkmaar gets acqainted with. Netherlands itself had a shortage of labour for its rapidly expanding economy. Recruitment treaties were drawn up with Spain, Portugal, Italy, Greece, Morocco and Turkey. Alkmaar saw the population diversity back in retail and the arrival of exotic eateries and restaurants. By now, there are not many cultures whose cuisines we have not become familiar with in town. A Moroccan restaurant is still lacking. Where the Dutch greengrocer made way for the supermarket, the Turkish greengrocer took his place. The Turkish community is the second in town. Workers from Mediterranean countries imported the Islam into town. In several places mosques were built or existing buildings were converted for it. The immigration possibilities were later restricted. The government preferred attracting higher-qualified people when automation proved that there would be less of a need of lower-qualified labour. Casa Rosa came to stand empty. The migrant workers returned to their countries or integrated into our society with a house of their own for their family. As a result of wars in the Balkan, Africa and the Near East a new constant flood of refugees got underway. Casa Rosa on the Picassolaan came to be called ‘Vluchthoef’ in 1989 and got a new lease of life as an intermediate camp for refugees. The latest stream of refugees is being housed in the tax office on the Robonsbosweg, which underwent a total makeover for that purpose in 2016.