Next, head to the iconic Sagrada Familia, Gaudí's unfinished masterpiece and a UNESCO World Heritage Site; be sure to pre-book your tickets for virtual access to avoid the lines.
Stroll through the vibrant Park Güell, another of Gaudí's creations, filled with colorful mosaics and whimsical structures, offering spectacular views of the city.
Take bus number 24 from Sagrada Familia, about 30 minutes.
After lunch, walk through the enchanting Gothic Quarter, where you can admire medieval architecture, explore boutique shops, and take in the sights of the Barcelona Cathedral.
Indulge in a seafood feast at La Paradeta, a unique self-service seafood restaurant where you choose the freshest catches and have them cooked on the spot.