Cloisters are architectural features found in MONASTERIES and other religious buildings. They are typically open-air walkways or galleries, often with arches and columns, that are surrounded by a wall or fence. Cloisters provide a secluded area for contemplation and prayer, and are often used as a place of retreat and meditation. Secludes are similar to cloisters, but are usually smaller and more private. They are often found in gardens or courtyards, and provide a quiet, peaceful place for reflection.