Hamburg has it all: unique architecture, countless canals and bridges, Germany's most famous party mile, outstanding museums. And then also the great harbour.
With its port, its huge harbour and its nearby beaches with different watersports on offer, Cherbourg is a destination with a focus on the sea.
Head to Lisbon for a stunning mix of ancient sites and modern wonders: from a 16th century Moorish castle to the largest aquarium in Europe.
Barcelona is an enchanting seaside city with boundless culture, fabled architecture.