Amiens  is the capital of the northern French region of Picardie. As well as its own attractions, the city makes a practical base from which to explore the area of the First World War's Western Front located nearby.
Trains from Paris at least hourly, normally about €18 each way. Journey time one hour ten minutes for fast Corail trains, slightly longer for stopping TER services.
Amiens has got a decent bus system.
Amiens' cathedral is one of the major works of the French Gothic style, with a fine facade and interesting sculptures.
The Hortillonages, market gardens separated by small canals, are visitable by boat. (May not be open in winter).