It's common that we say: The Great Pyramid is the most recognisable monument in Egypt. And we can also say: The Great Pyramid is Egypt's most recognisable monument.
Is the last one correct to be the same meaning as The Great Pyramid is the most recognisable monument of Egypt.
At last, Is it correct to use in and of (of / in Egypt) alternatively. Namely if there's not 'in' , we can use 'of'.