This is the 97th most frequent Icelandic word.
ísafirði
Ísafirði: A town in the Westfjords region of Iceland.
In this sentence, 'Ísafjarðar' is in the genitive case, used after the preposition 'til' to indicate motion towards the location, matching 'to Ísafjörður' in English.
Ég ætla að fara til Ísafjarðar á morgun.
I am going to Ísafjörður tomorrow.
In this example, 'Ísafirði' is also in the dative case, used to show the place where the action occurred, which is 'in Ísafjörður' in English.
Við áttum góðan dag í Ísafirði.
We had a good day in Ísafjörður.
Here, 'Ísafirði' is in the dative case, commonly used in Icelandic to indicate location. It corresponds to 'in Ísafjörður' in English.