King Willem-Alexander and Queen Máxima of the Netherlands immortalized on a cast-iron manhole cover (bottom left-hand corner on this pic!), outside the Royal Palace Amsterdam.
This Coronation Cover was designed by Aquafix Milieu for the occasion of the enthronement on April 30th 2013. Originally, the year and the crown were embossed in gold colour.
This is the second of such that I found. The first one was on Sint Agathaplein, in Delft.
I Becoming Dutch 