Perelandra is the C.S. Lewis novel in which Elwin Ransom travels to the planet Perelandra.
Published in 1943, Perelandra is the second book in Lewis’s Space Trilogy, also called the Ransom Trilogy. Ransom travels from Earth to the planet Venus, which its inhabitants call Perelandra. There he encounters a newly created world, a Green Woman, and a conflict that echoes the temptation and fall of humanity.
The first book, Out of the Silent Planet, sends Ransom to Mars, while the third, That Hideous Strength, returns much of the action to Earth. The trilogy combines planetary romance, Christian theology, philosophical speculation, and adventure rather than following modern scientific-fiction conventions closely.
A frequent mistake is to identify Out of the Silent Planet as the Perelandra book because it introduces Ransom and begins the trilogy. Perelandra is specifically the middle volume and the Venus-centered story.