1. Visit the Sagrada Familia: This iconic cathedral is one of the most recognizable landmarks in the city, designed by renowned architect Antoni Gaudi.
2. Stroll down La Rambla: This vibrant pedestrian street is filled with street performers, flower stands, cafes, and shops.
3. Explore the Gothic Quarter: This charming and historic neighborhood features narrow, winding streets, hidden squares, and ancient buildings.
4. Visit Park Guell: This whimsical park is another one of Gaudi’s masterpieces, with stunning mosaic work and beautiful views of the city.
5. Watch the Magic Fountain show: Located at the base of Montjuic mountain, this free nightly fountain show features lights, music, and water displays.
6. Try some tapas: Barcelona is known for its delicious tapas, small dishes of savory snacks that are perfect for sharing over a glass of wine.
7. Visit the Picasso Museum: This museum showcases some of the works of the famous artist Pablo Picasso, including some of his earlier works.
8. Watch a football match at Camp Nou: Barcelona is home to one of the most famous football clubs in the world, FC Barcelona. Catch a match at the Camp Nou stadium to experience the excitement and passion of the game.
9. Take a day trip to Montserrat: This beautiful mountain range is home to a famous monastery, stunning views, and hiking trails.
10. Visit the Boqueria Market: This famous market is filled with colorful stalls selling fresh fruits, vegetables, seafood, and more.

These are just a few of the many things to do and see in Barcelona. Whether you’re interested in history, architecture, food, or sports, there is something for everyone in this vibrant and exciting city.