If you want to fast-track your understanding of Barcelona and learn about its old town, this is a right tour for it. In the Gothic quarter a large part of the buildings are not from this era, but you will still find real medieval gems here.
Catalan Gothic differs from the Gothic styles from other parts of Europe. I'll explain you the difference as well as the difference between real Gothic and Neo Gothic styles. In the Middle Ages, Barcelona used to be the center of the powerful kingdom of the Crown of Aragon. It was during the Middle Ages that the Crown of Aragon reached its peak and we can still see evidences of its former splendor in the center of Barcelona.
The most efficient way to learn about the historical center is to take a walking tour. As a rule, we avoid crowded places and visit places that you would not be able to find on your own.