Window tracery Main article: tracery Windows were seen by the Victorians as the defining features of the Gothic styles, and they were, inasmuch as they determined the methods of wall construction. Early bar tracery consisted of dividing the arch into sub-arches, with foiled circles above, provided that the window had an even number of lights. An early variant was Y-tracery, in which the sub-arches were steeper and the circle was omitted. When extended across a larger window, this became intersecting tracery. These were the forms of Geometrical Decorated. In the flowing tracery of the Curvilinear style, the arches and circles were gradually replaced by forms derived from the ogee. An early type was fishnet tracery, seen at Wells, which evolved into
reticulated tracery. In both these types, a single unit is repeated across the window. However, there were many more elaborate forms of flowing tracery. These often had an underlying geometry of major subdivisions, concealed by many flickering minor subdivisions. Notable flowing windows include the west window of York (the so-called heart of Yorkshire), the east window of Carlisle and the east window of
Selby Abbey. Lincolnshire was a major centre of flowing tracery due to its good-quality, easily-worked limestone. However, tracery in Kent remained closer to its Geometrical origins, making less use of the ogee and more of elaborate cusping. File:East Window, Lincoln Cathedral - geograph.org.uk - 4301096.jpg|Geometrical tracery: the eight-light east window at Lincoln File:1161023 Cathedral Church of Christ, Blessed Mary the Virgin and St Cuthbert of Durham, Exterior, East End Durham 20240523 0013 DxO.jpg|Intersecting (left) and flowing (right) tracery,
Durham Cathedral. File:Canterbury, catedral (2007) 07.jpg|Elaborate Kentish tracery in the Oxenden window,
Canterbury Cathedral File:St Mary's Church, Chartham (34682257032).jpg|'Kentish' tracery in the east window of
St Mary's Church, Chartham File:The East Window, St Cuthbert's Church, Fishlake - geograph.org.uk - 4506708.jpg|A variant of reticulated tracery,
Fishlake, South Yorkshire File:St Wulfrum's, Grantham.jpg|Flowing tracery,
St Wulfram's, Grantham File:East end, St Mary, St Katherine and All Saints, Edington - geograph.org.uk - 2084691.jpg|Transitional Decorated-Perpendicular tracery,
Edington Priory, Wiltshire
Vaults Unlike in French Gothic, vaults were one of the principal locations for ornament. The tierceron vault had been developed at Lincoln in the Early English period, but became the general cathedral form in Geometrical buildings, most notably
Exeter Cathedral. One variant of the tierceron is the palm vault, where the ribs radiate from a central column, as at the chapter house of Wells. The introduction of the lierne vault, with minor ribs linking the main ones, was one of the features that began the Curvilinear, derived like so many others from St Stephen's Chapel. It gave masons an opportunity to play with geometry, creating patterns of stars, diamonds and octagons.
Towers and spires In this period, church towers were always topped with spires - where this is not the case, as at Lincoln, it is because they have been later removed. Tower buttresses took a variety of forms, but the most typical type was the angle buttress, rising to polygonal pinnacles. Hexagonal pinnacles were briefly in fashion in the 1330s, e.g. at
Grantham, but the usual form was octagonal. Spires could be over either broach form, oversailing the tower, or recessed form, set behind the parapet. In contrast to the soaring towers, the buildings themselves tended to look boxier, with low-pitched lead roofs hidden behind battlements, like the eastern chapels of Exeter.
Plan forms In general, churches followed the plan forms of the Early English period, with long naves and transepts, tall crossing towers and squared-off east ends. This is unsurprising, as few major churches were built from scratch. However, there were significant experiments with polygonal forms. Octagonal chapter houses had long been fashionable for secular cathedrals, and this was continued at York, Southwell and Wells. Wells took the polygonal fascination to new lengths, with a stretched octagonal Lady Chapel requiring odd triangular vaulted spaces to connect it to the main church. Ely brought the octagon into the church itself, removing the entire collapsed Norman crossing to open up the centre of the building with a vast stone and timber lantern. A parallel development was a minor fashion for hexagonal porches, at
Ludlow,
St Mary Redcliffe and
Chipping Norton.
Sculpture The Geometrical period saw the introduction of naturalistic foliage sculpture, of which the finest is at Southwell, replacing the earlier stiff-leaf. This was in turn replaced by a more standardised and stylised 'bubbly' foliage in Curvilinear Decorated, producing the hazy, all-over rippling seen in the buildings as a whole. In addition, figure sculpture became less formal, as may be seen by comparing the kings on the west front of Lincoln Cathedral with the saints on that of Wells. External figure sculpture as a whole became more widespread, with grotesques of monsters and mooning men atop churches, and carved fighting men hurling rocks atop castles. More standardised ornamentation was also used, with
ballflower being popular in the south-west, and
fleurons (square flowers) dominating later on.
Mouldings The crisp, deeply-undercut, linear mouldings of the Early English were replaced by broader ogee and wave mouldings, in both religious and secular architecture, to give a smooth, rippling effect, especially in the Curvilinear period.
Micro-architecture The features of Decorated, and especially Curvilinear, could be used at any scale. Hence, where a building could have tracery, vaults and pinnacles, the canopy of a pinnacle could also have tracery, niches and pinnacles. This fractal nature gave the Curvilinear much of its luxuriousness. Micro-architecture also unified the arts to a greater degree than before, so that architectural details could be seen not just on a church, but also on its screens, stalls, tombs and reliquaries. An early example was at Westminster, where the chapter house tiles copied the great transeptal rose windows in miniature. Battlements were another feature that could be used at any scale, reflecting the feudal fantasies of the nobility.
Military architecture In castle architecture, the Decorated era was marked a new complexity and massiveness. The reign of
Edward I, crusader and
Arthurian enthusiast, was a high point of courtly romantic culture and feudal exuberance, and castle building was an important aspect of that. Many particularly large castles were built at this time due to Edward's
conquest of the Welsh in the 1270s-80s. The ubiquitous round tower of the 13th century was occasionally superseded by the polygonal tower, as at
Caernarfon,
Denbigh and
Knaresborough, which both echoed Roman fortifications and linked to the complex spatial experiments seen in churches at the same time. The geometry of the great tower at Knaresborough is particularly elaborate, intersecting an octagon with an equilateral triangle. The upper parts of castles became increasingly crowded, echoing the micro-architecture seen in churches and providing a fine feudal-looking silhouette, as at Caernarfon, where the Eagle Tower bristles with three turrets, themselves topped with carved eagles. The introduction of the
machicolation, probably first seen in Britain at
Conwy (1283-87), added another way to decorate castle wallheads, as well as improving defence. There was a tendency in the details of castle architecture to evoke strength and massiveness through the use of heavy wave-mouldings, as at Caernarfon. The principal locations for architectural decoration were the main entrance, and the windows and roof of hall and chamber. Many houses had some form of fortification, though whether this was for defence of display is a matter of debate, with more recent historiography tending towards the latter. Door and window details generally followed church architecture, though naturally the traceries were simpler. However, this did not preclude high-quality stonework, as may be seen at the near-intact
Penshurst Place, built in the 1340s, where the windows are in the fashionable Kentish style. Roofs were an increasingly prominent feature, as halls became aisleless, requiring feats of carpentry to span them. Occasionally stone arches were used, as at
Mayfield Palace, but a more common solution was the arch-braced roof, of which Penshurst Place has a good example. Towards the end of the period, the hammer-beam roof was developed, the earliest surviving example being at Pilgrims' Hall, Winchester. == Notable examples ==