Barcelona's stunning Palau Reial Major (Grand Royal Palace) on Plaça del Rei houses one of the city's most captivating museums. Here you can take a journey through time to the very beginnings of Roman Barcino, founded by Emperor Augustus in 10 BCE. As you wander the ruins of the old streets, sewers, laundries, baths, and wine- and fish-making factories, you can admire the grandeur and power of medieval Barcelona.