Re: Cruising around Barcelona?
La Sagrada Familia is a must see.
The old town but watch out for local scammers and pickpockets. Same for La Rambla, keep to the north end as it gets a bit dicey towards the south end.
Good tapas everywhere.
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.