Its chequered past embraced periods of Phoenician, Punic, Roman and Byzantine rule before it was conquered by Spain in 1497. The latter part of the 19th century and the first quarter of the 20th century saw hostilities between Rif berbers and the Spanish, with the latter finally reinstating their control in 1927. The city was used by General Franco as one of the staging points for the rebellion of 1936. As part of the Spanish protectorate, Melilla developed the architectural style of 'Modernisme', the Catalan version of Art Nouveau, and boasts the second most important concentration of Modernist works in Spain, after Barcelona.