Willemstad to Heenvliet: from the 16th to the 21st century and back again. The modern world was represented by the long Haringvlietbrug over the Hollands Diep and the wind turbines in the background. From there I could look back at the old windmill in Willemstad.

And now we are in Heenvliet, which is utterly charming and within spitting distance of those petrochemical plants we saw on the first day. There are also the ruins of a 13th-century castle – Ravesteyn – left over from the Eighty Years War.