 For travellers from mainland Europe and the UK, another way to enter the country is by sea, with connections by ferry to Roscoff and Cherbourg in France, Liverpool in England and Pembroke, Fishguard and Holyhead in Wales, Douglas on the Isle of Man and Santander in Spain.These routes are operated by Irish Ferries, Stena Line, Celtic Link Ferries, P&O Ferries and Brittany Ferries.Motorways link Dublin with all the major cities in the country and there are plans to extend the motorway system in the future.