A riding hall, indoor arena, indoor school (UK English), or indoor ring (US English) is a building (part of an equestrian facility) that is specially designed for indoor horse riding. Smaller, private buildings contain only space for riding, while larger commercial facilities contain a "ring" or "arena" within a larger building as exclusively for equestrian use, but may also incorporate additional facilities for spectators or stabling of horses.
An enclosed but not covered area for riding horses outdoors is called a riding arena, (training) ring (US English), or (outdoor) school (UK English). In British English, this is also called a manège, but the term is not used in that sense in US English. In many other languages, the originally French word manège or a derived form means "riding hall", but in French it can also refer to a (not covered) riding arena.
Riding halls enable horses and riders to train or compete in dry conditions regardless of the weather. There are various designs. The most popular are either steel-girder or timber-framed buildings, with wood, brick or sheet-metal panels. Roofs can be made of various materials including sandwich panels, corrugated steel, or in smaller buildings, wood. In some cases, stables are built either nearby or attached to a riding hall, sometimes under the same roof. In addition, tension fabric buildings are also used as arenas. These textile buildings usually consist of an aluminium frame and a high-strength PVC-covered sheet roof as well as wind protection or windbreak(er) netting in the walls.
Riding halls are built with the following criteria in mind:
Government approval, building permits, or other official permissions are often required to build riding halls. Buildings intended for commercial or public uses may also have stands or other seating included with the structure. Facilities such as toilets or concessions may be included in a commercial facility.
Riding halls are usually not heated because this is healthier for the horses. There is no set standard, but many arenas have dressage standard dimensions of 20 by 60 metres (66 ft × 197 ft) or the small arena standard of 20 by 40 metres (66 ft × 131 ft). Commercial arenas may be significant larger. In the United States, a clear span of at least 60 to 70 feet (18 to 21 m) is a common minimum width, with 100 feet (30 m) and up seen in structures open to the public for competitive events. While length varies significantly, lengths from 90 to 200 feet (27 to 61 m) are common for private arenas.