All major religion are agreed and there is mentioned in all religious book that Prophet Adam was the first human being sent to the earth. But we have no any clear verse from any religious book that where does Adam first stepped in.
Adam peak is holy to Buddhist, christian , Muslim and many other religion follower. This video will show you the complete picture of Adam peak. Adam peak is in srilanka and historian believe that Prophet Adam was first stepped in on this place which is now called Adam Peak.