A bargain seven euros to get into, the Monastery of Pedralbes is a compelling corner of Barcelona that many tourists sadly miss. Founded in the 14th century, the complex contains its own stunning church, 3-storey cloister, all the living quarters of the Poor Clare Nuns, as well as an amazing collection of artwork collected over the centuries. The whole place offers a unique peek into the past and real insights into monastic life over the ages.