The Sagrada Familia in Barcelona is Gaudi’s most impresive project. The incredible amount of detail and the majestic size of the cathedral are simply impressive. Certainly should be in everyone’s bucket list.  After the cathedral, we visited Park Guell, but we did not enjoy it as there was a lot of contruction & remodelilng which made the air very dusty, not to mention the large number of people in the park!