The best way to travel around Barcelona is by public transport such as the metro or bus. A ten-ride ticket for the metro costs 10.20€ and is valid for ten trips. Taxi rides can also be affordable for short distances, with an average cost of 10-15€ per trip. Renting a bike is another great option to explore the city and to keep the costs reasonable.
If you have more time, consider visiting Montserrat Monastery, Tibidabo Amusement Park, or the National Art Museum of Catalonia. If you have less time, skip visiting the Camp Nou. Don't forget to try the delicious Spanish cuisine such as paella and tapas. Beware of pickpockets, especially in crowded tourist areas like La Rambla. During peak season, book your tickets to the attractions in advance to avoid long queues.