Barcelona has an excellent location.
The
Mediterranean Sea & the
Pyrenees, the
beaches & the
mountains: it's all affecting the city and its atmosphere!
If the area was plane, our view on the city would be different.
La Sagrada Família is one thing, standing on a "
mirador" or panoramic view in
Park Guëll or
Montjuïc while saying "
waaau" for over half an hour is another. The further away you go from the Mediterranean, the higher you go in altitude, which is logic in the case of BCN. Roughly you have 3 different zones: sea & beach, city, mountains. That's why if you ask the
Catalans here (
somewhat unpleased if you call them Spanish people) in which direction to go, they are using terms such as "
sube" and "
baja", "go up" and "go down". It's a small trick to orientate yourself, but not a very reliable one.
Recently I was looking at a map of BCN and its surroundings. For a bird, it's 12km to the campus. By car, 20km. By metro/train, probably the same. It takes me about 1 hour until I arrive, which makes
20km/h my average speed!
You get used to it and thanks to the flexibility of the Spanish timetables and colleagues in particular, it's even relaxing (even I would like to have spent more time in my large bed).
From my flat it's about 400m to the metro stop of
Sagrada Família. Two stops later I switch at
Diagonal from metro to (a light version of) train (*). From halfway the trip with the train until the UAB, you get
a holiday feeling: beautiful hills and mountains covered in green, small villages and nature.
The network and regulation of buses, metro, (light) train and RENFE is great!
That's what I've experienced yesterday. At 10 a.m. I had a training in
ion-exchange chromatography, so I definitely couldn't miss that one! I left my flat at 8.10 a.m. and arrived at
Provença at 8.30 a.m. But something was wrong: hundreds of people (yes, the hardworking Catalans are already awake) were waiting to catch the train and couldn't enter because of the security blockage. As far as I can understand Spanish,
a train was broken in the next station (
Gràcia) due to a malfunction. A quick reconfiguration of my morning plan brought me to the center of all branch lines:
Plaza Catalunya.
High frequency trains of RENFE were the solution and that's how I arrived, on time, for my training!
What a morning... 
(*) It's actually the same place but:
Diagonal = the name of the metro station / Provença = the name of the train station