You don't need to be of strong faith to appreciate the tranquil atmosphere of St. Nicholas Cathedral. Inquire when the next service is scheduled or when it's open for general viewing.
This Elblag principal church is a good spot to start your day of sightseeing. There's plenty to discover nearby, like Galeria El, Elbląg Museum, and St Nicolas Cathedral. Wander around at your leisure at St. Nicholas Cathedral before making tracks to these other fine attractions.