In 'The Aunt and Amabel' a young girl damages a special flower-bed without meaning to, and as a punishment her aunt sends her to the bedroom with the large wardrobe. When Amabel finds a railway timetable naming a station called 'Bigwardrobeinspareroom' in there she is intrigued. And in opening the wardrobe, she finds something very unexpected on the inside.
C.S. Lewis was famously a fan of E. Nesbit's children's stories growing up. 'The Aunt and Amabel' is the inspiration behind his masterpiece 'The Lion, the Witch, and the Wardrobe' (1950).