Monte Cassino is a rocky hill about 130 kilometres southeast of Rome, in the Latin Valley, Italy, 2 kilometres west of Cassino and at an elevation of 520 m. Site of the Roman town of Casinum, it is best known for its abbey, the first house of the Benedictine Order, having been established by Benedict of Nursia himself around 529. It was for the community of Monte Cassino that the Rule of Saint Benedict was composed.
The first monastery on Monte Cassino was sacked by the invading Lombards around 570 and abandoned. Of the first monastery almost nothing is known. The second monastery was established by Petronax of Brescia around 718, at the suggestion of Pope Gregory II and with the support of the Lombard Duke Romuald II of Benevento.
Wikipedia https://en.wikipedia.org/wiki/Monte_Cassino
Address Via Montecassino, 03043, Italy
Coordinates 41°29'23.803" N 13°48'47.97" E