Coming from the main path you first reach group of graves 3-5. They have a conspicuously round floor plan.
This is followed by grave 2, which is particularly impressive because of the carved spiral and arch pattern.
Grave 1 is a little apart from the others.
The Belvedere is just behind it. However, the path is currently closed and you have to go back to the main path in order to be able to reach the other groups of graves.