The desire to explore and experience new things is a charming characteristic in The Lion, the Witch, and the Wardrobe, but one that can lead to more trouble than expected. Exploration might mean investigating the outdoors, the indoors, a magical world that exists in another dimension, or even one's own psychological world.
The innocent desire of the Pevensie children to explore the world around them is contrasted with the selfish sightseeing conducted by the tourists who view the house with Mrs. Macready.