Inside this area there are typical examples of ornate gothic designs and architecture from the 14th and 15th Centuries such as the Palau Real , built on the ruins of the Roman settlement of Barcino. The Museu d'Historia de la Ciutat contains artefacts and excavations of Roman streets found in 1931 beneath the palace. The Catedral de la Seu was built between the 13th and 15th Centuries, expanding on the design set by the French. The intricate carvings and detailing both inside and outside add to the impressive character. Plaça Sant Jaume is the political heart with the Palau de la Generalitat facing the Catalan government building, both Modernista style buildings.