Luca's original Tour: Roman ruins, Gothic, Jewish and Born quarters

I am the only person running this tour, No Umbrella, No Metro, No Earpieces, No Upselling. Where was the Inquisition based in the middle age?Have you heard of the medieval practice of Immurement? Why Spanish is not the mother tongue of the Barcelonians ? Why is the mother of a Roman emperor standing on the highest spire of the Cathedral?Did you know that the most famous monument of the gothic is not even 100 years old? Where did the executioner use to live? Why were the Jewish quarter and the synagogue mayor wiped out in 1391? Why the basilica of Santa Maria del mar is known as the Cathedral of the sea? What is the origin of the Catalan flag that you can see everywhere in the city?Did you know that the first super hero of Barcelona was a young teenager? What is the connection between Sagrada Familia, Eixample and slave trading? What’s the most romantic day in Barcelona calendar? What is the origin of the name of Barcelona? How did the medieval city cope with the horrible smell in crowded places? Why do you find an english flag in the city coat of arms? Have you already visited the shortest street in Barcelona?How come 9/11 is the national day of Catalonia?Was Christopher Columbus from Barcelona?