What are your favorite concept albums?

I have a fascination with concept albums, especially when they have deep lore. My favorite band is Coheed and Cambria. I’m also really into The Dear Hunter, Mastodon, Stormkeep, Distant, and Dvne for their story telling. Metal concept albums in particular really scratch a particular itch for me. I’m open to and excited to hear any and all suggestions you may have to offer.