Calais Canal

Calais canal is the start of the French canal system and an ideal place to see  numerous species of birds. Bourbourg is situated in the maritime plain, at the heart of a triangle formed by Dunkirk, Calais and St-Omer. It is accessible by the motorways A16S, A25S and A26S and by the departmental D600.
Bourbourg today has became the county seat of the Canton, In 987, the city was called Broecborc, which means "The City of the Marsh" because of its position. The city is crossed by the canal that goes from Dunkirk to the Aa.
Gravelines Harbour
The historic port is reached via a tidal gateway, which is usually accessible 2.5 hours before and after high tide. Boats (with a draft of less than 2.5 metres) navigate a two mile stretch of the River Aa before entering the Vauban marina. It is also possible for appropriate craft to gain access to the French waterways and Belgium interiors on the network of canals which connect with Gravelines, via a lock in the harbour.