According to Travel Guru Simon Calder, Barcelona has Antoni Gaudi's "amazing architecture", the Picasso museum's "cutting-edge culture" and "great food and drink".
"If you can't find it in Barcelona, you're probably better off without it," he declared.
Furthermore, the district has a beach, which the specialist pointed out is a rare feature in big European cities.
Barcelona is Catalonia's capital, with Lonely Planet observing Catalans are known to consider the autonomous community to be a country in itself.
It has its own history, language and culture, it added, arguing the sense of difference between the region and other parts of Spain is "intense".
The coastline of Northern Spain in general is "fantastic", featuring "superb terrain" and cities or towns that are "really exciting", Mr Calder remarked.
He said the mountains of the Asturias and Pyrenees are "absolutely gorgeous".
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