1 . Once the Prophet (S. A. W.) said, "If anybody comes to Madina to see my grave, it will be just like as he saw me in my life, however, he would not get the honour of my companion".
2 . The grave of Prophet (S. A. W.) is actually the house of Syeda Aisha (RA) which was just adjacent to Masjid-e-Nabvi, but now it is inside the mosque. If you come into the mosque through "Bab-e-Baqqi", you will get it in your left hand which is the facing side and well known golden fence (grill) is here. The biggest hole on the golden grill indicates the exact the facing positions of Beloved Prophet (S. A. W.).
Here faithfuls present their Salaam from morning till night (In the night mosque is closed whereas in Ramadan it remains open 24 hours). You will find yourself on the feet side of grave if you enter from "Bab-e-Jibrael", next to "Bab-e-Baqqi".
4 . Two more graves are presented inside the shrine of Prophet (S. A. W.) now a days. One of Syedna Abu Bakar Siddiq (RA) and other on of Syedna Umer (RA). Two shorter holes on the golden grill indicate the faces position of Syedna Abu Bakar (RA) and Syedna Umer (RA) respectively.