Amsterdam: The
Allard Pierson Museum (the archaeological museum of
the University of Amsterdam) displays a number of Egyptian mummies
and artifacts. including three nice fish mummies:

Assen: The
Drents Museum displays
a number of bog bodies, including the Weerdinge Men and the
Yde Girl:

Leiden: The
Rijksmuseum van Oudheden displays
many Egyptian mummies in an outstanding exhibit.