Ajuntament de Barcelona

Around the left-hand corner of the City Hall's rather dull 18th-century neo-classical façade sits the old entrance, in a wonderfully flamboyant 15th-century Catalan Gothic façade. Inside, the building's centrepiece (and oldest part) is the famous Saló de Cent, where the Consell de Cent (Council of One Hundred) ruled the city between 1372 and 1714. The Saló de Cròniques is filled with Josep Maria Sert's immense black-and-gold mural (1928), depicting the early 14th-century Catalan campaign in Byzantium and Greece under the command of Roger de Flor. Full of art and sculptures by the great Catalan masters from Clarà to Subirachs, the interior of the City Hall is open for guided tours every half hour (in different languages – English is at 11am) on Sundays.