Armacha (GR: Αρμάχα) lies at 490 m above sea level, at a distance of 7km from Kastelli, with 110 residents (census 2001) and is first referred to by Barozzi in 1577. Armacha is rich in the production of agricultural and livestock products.
The Metropolitan Bishop, Tirnovos Voulgaria Ilarionas Kabanaris Sinitis was born, and is also buried here. A man of advanced learning, he wanted to translate the Bible to Demotic Greek.