The cloister garden provides shelter from a hostile outside world. Its aim is to offer a space for contemplation and prayer, as well as a productive space for altar flowers, herbs for cooking and healing, and fruit and vegetables for eating. Look for high walls that isolate the garden and covered walkways around the perimeter. Typically a central water feature provides irrigation and interest; rectangular plant areas make efficient use of the space. Cloister gardens are often not linked to their surrounding building - usually accessed by a side door. This feature adds an element of surprise. Though quite different, another walled garden style is the Islamic garden.
Check out the posts below for other examples of gardens inspired by the Cloister style.