By the assistance of a monk called Magháriyús (Macarius), she found the place where the true cross was buried. Three trees in the form of crosses were found in the same grave, and the moment, as the Christians relate, a dead body was touched by them, it came to life again: this day was the 4th of Eïlúl (September), which is therefore celebrated by the Christians as the feast of the Invention of the Cross, and has ever since been held as a great festival by the Greeks. Helláneh also built the convent of the Kamámeh (_i.e._ the church of the holy sepulchre) on the spot where the dead body had been restored to life, spent immense sums of money in repairing and adorning the mosque of Al-aksá built on the site of the temple of Solomon, restored Bethlehem, and did many other charitable and pious works. She then returned to Islámbúl, and presented the wood of the cross to her son Constantine, who received it with the greatest reverence, and carried it in solemn procession to the convent on the summit of Zírek-báshí. The noblest monuments of his power and resolution to surpass all other princes in the strength and durability of his works, are the walls of Constantinople. On the land side of the city, from the Seven Towers at its western extremity to Iyyúb Ansárí, he built two strongly fortified walls. The height of the outer wall is forty-two cubits, and its breadth ten cubits; the inner wall is seventy cubits high and twenty broad. The space between them both is eighty cubits broad, and has been converted into gardens blooming as Irem; and at present, in the space between the Artillery (Tóp-kapú) and Adrianople gates (Edreneh-kapú), are the summer-quarters (_yáïlák_) of the Zagharjíes, or 64th regiment of the Janissaries.