The Eixample District in Barcelona, Spain is characterised by its strict grid pattern and apartments with communal courtyards. This thoughtful and visionary design was the work of Ildefons Cerdà (1815–1876). His plan features broad streets that widen at octagonal intersections to create greater visibility with increased sunlight, better ventilation, and more space for short-term parking. (Photo by Benjamin Grant/Penguin Random House)
