Which Narnia novel by C.S. Lewis features the Pevensie children entering through a wardrobe?

The C.S. Lewis Narnia novel featuring the Pevensie children entering through a wardrobe is The Lion, the Witch and the Wardrobe. Published in 1950, it introduces Peter, Susan, Edmund, and Lucy Pevensie and their first adventures in Narnia.

Lucy discovers the passage into Narnia while exploring a wardrobe in a country house during the Second World War. In Narnia, the children encounter the faun Mr. Tumnus, the White Witch Jadis, and Aslan. The story centers on the struggle against the Witch’s rule and the restoration of Narnia.

The book was the first Narnia novel published, although some readers later encounter editions that place The Magician’s Nephew first because it depicts earlier events in Narnian history. The wardrobe itself became one of the most recognizable portals in children’s fantasy literature.