When planning an itinerary for Barcelona, Spain, I would recommend setting aside a specific block of time for the Sagrada Família. You might start by checking
https://sagradafamiliatickets.es/ Sagrada Familia to review the available ticket options and visitor guidelines. This will make it easier to select a convenient time slot and organize the rest of your sightseeing around the city. I suggest allowing extra time to explore both the exterior façades and the interior; the basilica is so unique that you’ll want to take your time admiring it. This approach helps ensure your trip is enriching without becoming exhausting.