Palau Reial Major is an iconic Gothic royal complex in Barcelona's Plaça del Rei, once the principal residence of the counts of Barcelona and kings of the Crown of Aragon. The ensemble comprises three magnificent buildings: the Saló del Tinell (1359–1362), the Palatine Chapel of St. Agatha (1302), and the Palau del Lloctinent (1549), representing centuries of Catalan political power and ceremonial grandeur. The architecture blends Visigothic and Romanesque foundations with Gothic excellence, exemplifying Barcelona's medieval heritage. Today, visitors explore this conjunt monumental through the Barcelona City History Museum, experiencing one of the finest Gothic architectural ensembles of the medieval world.