Garden City of Segur de Calafell Historical milestone · Calafell, Baix Penedès, Tarragona Image of Calafell, not of the place itself. The urban development project begun in 1947 on the pine woods beside the beach gave rise to Segur, which came to be one of the largest housing developments in Europe. It marked the passage from an agricultural and fishing economy to another based on second homes. 1947 Photo: fer55. (CC BY-SA 2.0) What to see and do in Calafell