We just where there for the day , didn’t check the environment but i think there are routes ..:

Hi there We actually went from Canet de Mar by train and changed trains at some remote place I can't remember, but then got off in Girona where we walked all over from where we stayed right in the centre. Never used any public transport, but did get good exercise! Martie's Coffee Shop was a good stop along the way.

Si, d'estate è aperta.

La durée peut être assez varié dépendant d'où vous partez et où vous sortez. Avec des enfants, la plus courte peut être de 30-45 minutes mais il faut se rendre au départ ce qui peut prendre également du temps. Bonne visite

I would include Besalu. Take the bus from just off the Passeig de Gracia. Take the bus from there to Girona and train back to Barcelona. Very nice day trip.

I agree with the prior answer and would add that there is often live musicians in the ruins/park behind the cathedral. It is slightly uphill from the back of the church. Girona is a world class bicycling City, I would find a bike shop for the sound of cyclists wheels. Water sounds from the river through town and possibly the daily market just off the river.

This is a great place to visit. It is not a complete wall around the old city. In other words, you do not end up where you started. You can start at either end, but the wall slopes slightly so if you start at one end you will be walking uphill all the way round it, whereas if you start at the left hand end (behind cathedral), you will be walking downhill - much the better option. Either way, it is a really good walk. There are steps at either end to climb to the top of the wall.

Visita gratuita, bellissimo percorso.

It's better To walk on the Muralla before 11 h To be under sunshade .