Barcelona is a city with many faces, from the Gothic Quarters and the Sagrada Familia to the high-rise towers and the Mediterranean beaches. Although this makes it a traveler’s paradise, it also means that in just a few days it is hard to cover it up. The easiest way to ensure you don’t miss out on any of the must-see attractions is by choosing a Barcelona tour. Usually performed by locals, these tours will cover all of the top attractions, enabling you to explore the city entirely.