Taylor E.
Yelp
We stopped in here on our first night in Barcelona as it was walking distance from our flat. The exhibit was called Walking with Gaudi. We were given Samsung phones with headsets and the whole experience was audio/visual. There was an introductory movie at the beginning summarizing Gaudi's life followed by several rooms talking about his inspirations, how he started out, some replicas of pieces, and models of unfinished cathedrals. I'm not sure there was actually any Gaudi artwork in there...
My husband enjoyed the exhibit because he likes history, but as I am a very visual person I was not a fan. We did learn a lot about Gaudi which made us appreciate the Gaudi buildings we saw later on in our trip. However, with admission at 15 euro per person I cannot say I felt the exhibit worthwhile. I found that much of the same information was also included at the museum underneath Sagrada Familia.
If you have only a limited amount of time in Barcelona, I would advise using your time to visit other Gaudi buildings.