Ramesses II built many monuments around egpyt however they were not built to last, he wanted to be famous and powerful extremly fast. Not many buuilding are left from his reign.
the battle of kadesh was a great example of his reign, he claimed that he had a great win even though there was never a war. ramesses II ( the great) was not so great, he just wanted the power and infulence.
Also Ramesses II wasnot a direct desendant of another pahraoh he was a military leader that after the death of Set I was announced as the new pharaoh.
hope that helps a bit.