The Holy Monastery of Varlaam is the second largest monastery in the Metéora complex. It was built in 1541 and embellished in 1548. A church, dedicated to All Saints, is in the Athonite type (cross-in-square with dome and choirs), with spacious exonarthex (lite) is surrounded by a dome. It was built in 1541/42 and decorated in 1548, while the exonarthex was decorated in 1566. The old refectory is used as a museum while north of the church is the parekklesion of the Three Bishops, built in 1627 and decorated in 1637.