The acquisition of the city by the House of Orange-Nassau marked its emergence as a "residentiestad" (residence city). The presence of the Orange-Nassau family attracted other nobles, who built palatial residences in the old quarters of the city. The most impressive one, built by the Italian architect Thomas Vincidor de Bologna for the first Dutch prince, was the first renaissance-style palace built north of the Alps. In the 15th century the city's physical, economic and strategic importance expanded rapidly. A great church was built in Brabantine Gothic style with a gallant tower, called "Grote Kerk" (main church) or also "Onze Lieve Vrouwe Kerk" (Church of Our Lady). In 1534 Henry III of Nassau-Breda rebuilt the modest medieval fortifications in impressive style.