Where does “バルセロナ” come from?

バルセロナ (Japanese) comes from Spanish Barcelona, from Catalan Barcelona, from Iberian Barkeno.

Ancestry of “バルセロナ”, step by step

Step	Language	Word	Meaning
1	Spanish	Barcelona	—
2	Catalan	Barcelona	—
3	Iberian	Barkeno	—

バルセロナ — Etymology, Origin & Word History | Etymology Explorer