In Barcelona, they’re experimenting with a new way of designing the city. Superblocks are vast low-traffic zones, but they’re also deeply controversial. The aim is cut pollution and reclaim public ...

Many cars are no longer welcome in Barcelona. In September, the city began implementing a plan to create a set of new "superblocks," car-free areas that are designed to maximize public space.

In Barcelona, they’re experimenting with a new way of designing the city. Superblocks are vast low-traffic zones, but they’re also deeply controversial. The aim is cut pollution and reclaim ...