Sprawling Nou Barris encompasses the landscaped Central Park and wilder pine forest trails in the Collserola mountains. Elsewhere, hilltop castle Torre Baró has views across the city, while the surrounding slopes are marked by centuries-old aqueducts. The vintage pumping station Casa de l’Aigua has a museum explaining the city’s water supply. Suburban areas revolve around plazas with simple cafes and tapas bars.