Best CONCEPT album of All time

CONCEPT ALBUM ~ album which basically sticks to one theme or One range of Topics, less generalized lyrics, all songs makes more sense only when put together

My nomination - Green Heart Astronaut by poetik justis

Reason - album sticks to idea of Cosmic Existence, I have not seen even Foreign Artist Express Existential wisdom with such simplicity

Concept is supper unique and Beautiful, Execution get little weird due to nature of topic

PLEASE SHARE MORE SUCH ALBUMS in the comments