It is a monastery for nuns placed in Mati of Attica.
It was founded in 1966 by the kind sponsoring of the late Angeliki
M. Lyra and hosted a Foundation called Lyreio. In 1975 it was transferred in the
place where is today and a number of buildings hosting the Lyreion Foundation
for Children are built. In the monastery there are 24 nuns led by the abbess Maria
Kalemi. The Lyreion Foundation for Children functions with the nuns and hosts
a good number of orphans, some of them being students of the Greek Universities
from foreign countries.
Today, the monastery numbers some 24 nuns, the abbess included. It
celebrates in the Feast of the Holy Trinity.