Ferry travel to Amsterdam, Bilbao, Rotterdam, and Calais from UK ports increases in popularity.

400-character summary: Ferry travel to Europe's Amsterdam, Bilbao, Rotterdam, and Calais from UK ports gains popularity, with routes from Newcastle, Portsmouth, and Hull. Ferry journeys offer scenic views and access to each city's attractions, museums, and architecture, as well as neighboring cities. Popular destinations include Amsterdam's modern attractions, Bilbao's Guggenheim museum, Rotterdam's modern architecture, and Calais' proximity to Belgium's Bruges.