Editor’s note: This feature from Barcelona is the third installment in our series this week devoted to the top street foods in each of the Culinary Backstreets cities. In Barcelona, a great deal of eating is done in the streets. Sidewalk cafés line the plazas and paseos, often to the point that it’s difficult to tell which tables belong to which establishment.

In Spain, conservas, or foods preserved in cans and jars, are not simply a matter of economic survival or a source of basic nutrition for students, hikers, military recruits and the like. Rather, the tradition of conservas more resembles that of keeping one’s most beautiful jewelry locked safe in a strongbox, to be brought out only on special occasions like Christmas, birthdays or the victory of a favorite football team. There’s nothing better than some delicate canned cockles to lavish on your parents-in-law before a holiday meal!

Most people who visit Barcelona are sure to spend at least some time at one of the city’s beaches. Yet few are aware that when seeking respite from the bustling urban streets, heading up into the forested hills above the city can be just as pleasant. Vallvidrera, a village at the entrance to Collserola National Park that offers gorgeous views of the surrounding forests and the city below, is just the place for such an excursion. Starting in the early 19th century and up until the 1980s, Vallvidrera served as a vacation destination for wealthy Barcelonans who wanted to escape the summertime heat of the city. The abundance of mansions here, many built in the Modernist style, is a testament to this bygone era. Nowadays, although Vallvidrera is a year-round community that is technically part of Barcelona proper, it’s still a destination for local urbanites and their families wanting to get out of the city and relax, particularly on weekends.