I cannot talk about John H route, but if, as you say, you want to see Montserrat (you can even sleep in the parking if you ask them and are willing to spend the night in solitude), then I can recommend some places:
- if you can, while still in France, Colliure is worth a visit
- Once in Catalonia, you have multiplie options. If you want to see the Costa Brava without lots and lots of people, now it is the season to do so (but I wouldn't have a bath with the current temperatures :scared: Cadaqués is a pretty village but anti-motorhomes, if you want to visit it this is the time of the year when you are least un-welcome. Port de la Selva and Pals are supposed to be motorhome-friendly.
- Medieval villages: Peratallada and Ullastrell, near the Costa Brava, and, wildcamping friendly, Besalú.
- The old quarter of Girona, with the jew part, and the cathedral, is worth a visit.
- Barcelona.... you have a lot to see there... there are a couple of parkings (not cheap, at about 20 euro/day), one of them almost on the beach.
- Tarragona old quarters, with the Roman amphitheater (sp?), the walls, cathedral... and you can wildcamp along the Platja del Miracle (Miracle beach), just don't park too close to the port building, because of the night bars and the possible noise. The beach on your window at night... beautiful. There are a couple of pics in my blog, if you search for Tarragona. Well, there are also trips to several of these locations... autocaravanning.blogspot.com (sorry for the double n, but the correct word was already used and at that moment I didn't have anymore working grey cells...)
- Not far from Tarragona, inland, you have two important monateries, if you are into it: Santes Creus and Poblet.
- While you are there, a typical meal from Valls (can be found anywhere, around Catalonia), is the calçotada. Not the most exquisite of the meals (though I love it!), but one of the funniest! You peal something similar to an onion (in fact, it IS an onion, cultivated in a special way, but it does not taste like onion) with your hands (the fact that it is burned in flames to cook it, gives you an idea of the "tidyness" of the operation...), then soak it in a special sauce, then let it hang over you and catch it with your mouth... After the calçots, they will serve grilled meat and sausages, then orange and maybe a typical cake. This is seasonal, and ends beginning of March.
- If you are interested in Picasso, he spent some time in Horta de Sant Joan. There is a smallish exhibition.
- Delta of the Ebre river is a very nice area. Free area for motorhomes, there's some info in an online magazine (onroadmagazine.com), in Spanish. You can download it in PDF and maybe copy and paste the text into translate.google.com
From now on, you are out of Catalonia, I can only recomment Morella (I have not been there but I had good reports), Valencia (but you MUST leave the M/H in the Odissea Camper Park, there are LOTS and LOTS of broken in and even stolen M/H around the touristic parts of the city). From there, I'm lost.
Ask anything you want about the area, maybe I can help.