The ambulatory (Latin: ambulatorium 'walking place') is the covered passage around a cloister or the processional way around the east end of a cathedral or large church and behind the high altar.[1][2] The first ambulatory was in France in the 11th century but by the 13th century ambulatories had been introduced in England and many English cathedrals were extended to provide an ambulatory.[3]
The term is also used to describe a garden feature in the grounds of a country house. A typical example is the one shown, which stands in the grounds of Horton Court in Gloucestershire, England.[4]