It's often interesting to explore differing beliefs. A visit to Nuestra Senora de la Asuncion Church is a fantastic way to appreciate one of the local religions.
You'll have sightseeing choices galore in Masaya. Nuestra Senora de la Asuncion Church is a great place to start here, but there are numerous other fine attractions to consider. Masaya Volcano National Park, Masaya Old Market, and San Sebastian Church are near the house of prayer and will round out your day nicely.