Hello - We are thinking of a trip to Portugal in late May/early June 2023. It will be me, my husband and our son, who will be 17 by then. Lisbon is a definite, but we're debating about adding a few days in Porto. Is there enough there to appeal to a teen boy? He's into music (mostly rock), technology, military history and offbeat shops and markets, and also plays tennis. Not much for hiking or outdoor adventures although he does enjoy the beach.
Thank you for any advice!