Parc de la Ciutadella-Parque de la Ciudadela, built by Josep Fontserè for the 1888 Universal Exposition, on the grounds of the old fortress.

Parc de la Ciutadella-Parque de la Ciudadela is one of the city's largest and most traditional parks. It is built on the grounds of the old city fortress, which is the reason for its name. It was chosen as the venue for the 1888 Universal Exposition. The park's construction was commissioned to Josep Fontserè, who collaborated with the young artist Antonio Gaudí, who was 36 years old at the time. It has the honor of having been Barcelona's only public park for many years. Today, it is one of the so-called "lungs of the city."

It spans approximately 17 hectares and is located in the Ciutat Vella neighborhood.

Within the park are the old Citadel Arsenal, now home to the Parliament of Catalonia, and the Castle of the Three Dragons, now the Museum of Zoology.

The monumental waterfall and the artificial lake are among its charms; you can take a boat ride on the lake.

Another interesting visit in the park is the Greenhouse, a typical example of the iron and glass architecture of the Eiffel Tower era, which houses a cafeteria.