Barcelona
The story often opens in Barcelona, a city that manages to be both ancient and unfinished at the same time. Wander the Gothic Quarter and you’re walking through Roman-era stone streets that later grew into a medieval maze — narrow alleys, hidden squares, and a cathedral that’s stood since the 14th century, its cloister still home to descendants of geese that arrived more than five hundred years ago.
Barely a mile away, the city turns modern and strange in the best way: Antoni Gaudí’s Sagrada Família has been under construction since 1882, its cross-shaped towers and stained glass still rising more than a century later, funded entirely by donations and still not finished.