Shimmering light
The combination of the individual dabs of paint creates shimmering light effects on the water's edge.
The harbour
This work depicts Rotterdam's busy harbour, a view which Signac painted several times between 1906-7.
Erasmus Bridge
Zooming into the painting you can see one of Holland's most famous bridges, the Erasmus Bridge, which spans the River Nieuwe Maas.
Boat trip
Amongst the larger boats, Signac has also painted in some smaller rowing boats. Maybe they're out fishing?