Categorize the type of these landmarks.
Grand Canyon, Statue of Liberty, Eiffel Tower
The Grand Canyon is a natural landmark, while the Statue of Liberty and the Eiffel Tower are both man-made landmarks.
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize the type of these landmarks.

### Input:
Grand Canyon, Statue of Liberty, Eiffel Tower

### Output:
The Grand Canyon is a natural landmark, while the Statue of Liberty and the Eiffel Tower are both man-made landmarks.