Opal Coast
Heritage on the Opal Coast
Vauban, the forts, the belfries and a 1,400-square-metre crypt
9 things to do, 6 of them free
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9 things to do
Neufchâtel-Hardelot
The château d’Hardelot
A neo-Tudor manor house, English gardens and the only Elizabethan theatre in France
Two to three hours · Paid entry for the château, grounds free to enter
Calais
Calais Citadel
Vauban's ramparts turned into a park, open day and night
One hour · Free, open 24/7
Boulogne-sur-Mer
The Basilica of Notre-Dame
A dome you can see from everywhere, and beneath it the largest crypt in France
One hour · Basilica free, crypt paid
Boulogne-sur-Mer
The port of Boulogne-sur-Mer
France's leading fishing port, facing the busiest strait in the world
One to two hours · Free
Ambleteuse
Fort d’Ambleteuse
A Vauban fort planted in the sand, circled by the tide twice a day
One hour · Free to view from the beach; occasional interior visits, charged
Montreuil-sur-Mer
The ramparts of Montreuil-sur-Mer
A whole walled town, twenty minutes from the sea it no longer touches
Two hours · Ramparts free to access; citadel charged
Dunkerque
The Saint-Éloi belfry
Fifty-eight metres of brick, fifty bells, and the best view of the city
One hour · Charged to climb; the exterior is free
Gravelines
The Vauban fortifications of Gravelines
A star-shaped town, water-filled moats, and a full walk on foot
One hour · Free
Gravelines
The lighthouse of Petit-Fort-Philippe
A black-and-white spiral, one of the few North Sea lighthouses you can climb
Half an hour · Charged, a few euros
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