It's often fascinating to delve into different belief systems. A trip to Meritxell Sanctuary is a great way to deepen your knowledge of one of the local religions and ways of life.
You'll have no end of sightseeing choices when in Canillo. Meritxell Sanctuary is a good place to start here, but there are loads of other fine spots to discover. Caldea Spa, Pal-Arinsal Ski Resort, and Soldeu Ski Resort are not far from the house of prayer and will round out your day nicely.