Analysis of information sources in references of the Wikipedia article "List of obelisks in Rome" in English language version.
On the other side of it is a high tower made of one piece of stone, like a three-cornered diamond raised upon three brazen feet; and many, taking it for a holy thing, creep between the ground and the base of that tower. This was a work undertaken in honour of Julius Caesar and assigned for his burial, and on the top of it are three large gilt apples in which is the dust of the Emperor [sic] Julius Caesar, and certainly it is a noble edifice and marvellously ordered and very strange. It is called Caesar's needle, and in the middle and at the base, and even at the top, are a few ancient letters carved in the stone which now cannot well be read, but in fact they record that the body of Julius Caesar was buried there.
