Due to the growth of the city, Amersfoort’s industry increasingly disappeared to the outskirts of the city in the second half of the twentieth century. However, Isselt business park and the De Hoef site, which was later developed on the border with Hoevelaken, could hardly cope with the growth. That is why Calveen business park was developed on the north side of the city in the 1990s. It covers an area of ​​62 hectares and offers space to companies in the production, wholesale and small-scale business services. The streets of the Calveen business park are named after rockets, spacecraft and satellites. One street, however, is named after the farm ’t Haartje, which was built around 1750 on a high field that originally belonged to farm Sneul under Nieuwland and derived its name from ‘haar’, which is high-lying heath.