What is An example of a metaphor in F Scott Fitzgerald's short story Babylon Revisited is?

One example of a metaphor in F. Scott Fitzgerald's short story "Babylon Revisited" is the comparison of Paris to a memory-laden playground for the protagonist, Charlie Wales. The city is portrayed as a metaphorical battleground where Charlie confronts his past mistakes and attempts to rebuild his life amidst the emotional turmoil of his memories.