The old Born Market contains 8,000 m2 of archaeological remains of the city from the beginning of the 18th century, which can be seen from the viewing balcony of El Born Cultural Centre. Very nearby is Ciutadella Park, one of the city’s main open spaces laid out on the site of an old military fortress. Here stands the Parliament of Catalonia and the Monumental Waterfall designed by Josep Fontserè in 1875. His assistant was the architect Antoni Gaudí. In the park is one of the entrances to Barcelona Zoo, one of the most outstanding in Europe.