Model a complex sentence, with "although" and a noun clause.
"Although it's difficult to believe, the fact that she finished her project in just one night is beyond impressive."
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Model a complex sentence, with "although" and a noun clause.

### Response:
"Although it's difficult to believe, the fact that she finished her project in just one night is beyond impressive."