Winner of the liberal cause in Portugal and first emperor of Brazil, D. Pedro, the heir to King D. João VI, was one of the most controversial figures in the History of Portugal. And he was the only one who established with the inhabitants of Porto, by tradition averse to kings and nobles, a relationship so strong that, hours before he died, he decided to donate his heart to the city of Porto. It is the story of this unique relationship and the troubled years that mediated the transfer of the Portuguese court to Brazil, in 1808, and the end of the civil war, in 1833, that the historian Eugénio dos Santos, biographer of D. Pedro IV, goes to us. tell by some of the places that were the scene of the presence of D. Pedro in Porto, between the decisive years of 1831 and 1833.