This is the 3382nd most frequent Catalan word.
cadaqués
Cadaqués: A town on the Costa Brava in Catalonia, Spain.
Here, 'Cadaqués' is the proper name of a town, used as a subject in the sentence.
Cadaqués és un municipi molt pintoresc a la Costa Brava.
Cadaqués is a very picturesque town on the Costa Brava.
In this sentence, 'Cadaqués' is used as the location within which an activity, visiting a museum, takes place.
A Cadaqués, pots visitar la Casa-Museu de Salvador Dalí.
In Cadaqués, you can visit Salvador Dalí's House-Museum.
Here, 'Cadaqués' is part of a prepositional phrase indicating the location of the activity, which is spending a vacation.