IJmuiden is a port city in the Dutch province of North Holland, and is the main town in the municipality of Velsen. It is located at the mouth of the North Sea Canal to Amsterdam, and lies approximately 17 kilometres (11 mi) north of Haarlem.
The internal capitalization in the spelling is due to the fact that IJ is a digraph in Dutch, possibly a ligature, and is therefore sometimes considered to be a single letter
