A Holy Cell is a monastic institution belonging to a dominant Convent or Monastery. The monastic Cells are relatively spacious buildings, incorporating a Chapel or Church and have been granted a territorial area of ​​the dominant Monastery depending on their size and history. These usually host very small groups of 2-3 monks who are engaged apart from their monastic duties, also in agriculture, livestock, handiworks and other work.

There are also Cells in holy places specially allocated for covering the needs of the pilgrims. They mainly consist of one or two storey buildings around holy shrines. Most monastic Cells in Greece, are located on Mount Athos, Meteora and the rock of Monemvasia.