A concept dating from before the 12th century, the bower( from old English bur) was a delightful feature of the Medieval Hortus conclusus or enclosed garden. Often a shelter made of tree branches and twining vines, the bower was a way to immerse onself in nature, away from prying eyes and temporal distractions.

http://www.cityofwinchester.co.uk/parks/eleanor/eleanor.html

Willow elements needed to create your own bower can be purchased here: http://www.thewillowfarm.com/willow_landscape_achitecture.htm
Or construct your own personal Bower with bamboo poles and a summer climbing annual such as pole beans or a gourd vine!