This is a "must see" when in Barcelona. What was designed and started by Gaudi and is being finished by modern contrctors is an amazing structure whose inspiration was nature itself. Gaudi took cues from trees, flowers, forests, and various fauna to create columns, arches, and towers that are truly unique. The outside is breathtaking, but the inside is where you get a feel for what Gaudi was all about. Still under construction after more than 300 years, and now being finished thanks to an influx of funding from around the world, this cathedral is one of the most impressive structures I've ever seen. Do look for other buildings in Barcelona designed by Gaudi, also. La Sagrada Familia is well worth the time and admission fee. You are free to take photos indoors. The gift shop is also nice. It has many items made right in Barcelona.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.