You don't have to have a strong religious faith to enjoy the serene atmosphere of Albarracin Cathedral. Ask when the next mass starts or when it's open for general viewing.
If you're spending a while in Albarracín, Albarracin Cathedral is a great place to start your sightseeing. This principal church is one of many attractions that'll keep you on the go here. Albarracin Castle, Pinturas Rupestres, and Pinturas rupestres are also waiting to be discovered nearby.