[From the Wikipedia article]
Maerten van Heemskerck or Marten Jacobsz Heemskerk van Veen (1 June 1498 – 1 October 1574) was a Dutch portrait and religious painter, who spent most of his career in Haarlem. He was a pupil of Jan van Scorel, and adopted his teacher’s Italian-influenced style. He spent the years 1532–6 in Italy. He produced many designs for engravers, and is especially known for his depictions of the Wonders of the World.