Autumn is a wonderful time to explore the Collserola Park situated on Barcelona’s western fringe. The intense summer hear has gone, making outdoor pursuits such as hiking more agreeable. With a total area of 84.65 km², Collserola is the largest metropolitan park in the world – 8 times larger than the Bois de Boulogne in Paris, and 22 times larger than Central Park in New York. This means the park is a wonderful escape from the city, popular for walking, cycling and birdwatching. There ...