Or the Sagrada Familia in Barcelona for a contemporary and in-progress example. Maybe a generation ship needs to have some sort of 'cathedral-in-the-sky' relig

Or the Sagrada Familia in Barcelona for a contemporary and in-progress example. Maybe a generation ship needs to have some sort of 'cathedral-in-the-sky' religion connotation in order for us to commit to building it. Sounds like an interesting idea for a sci-fi plot!