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Continue along Quai Henri IV, then turn left on Rue Beauregard. Before making that turn, stop to admire Crab Tower, part of the old town walls.
At the end of the alley, turn right on Rue David Lacroix and then left on Rue de la Rade. Turn right again towards Estran Cité de la Mer, a not-for-profit scientific and technical cultural centre with a focus on the Upper Norman coastline. It is open to the public all year round, with 1,600 m² of exhibition space covering shipbuilding, fishing techniques, the coastal environment and the wildlife of the English Channel. It also houses multiple fish tanks populated with local species.