Bonewaldesthorne's Tower is a medieval

Middle Ages

The Middle Ages is a periodization of European history from the 5th century to the 15th century. The Middle Ages follows the fall of the Western Roman Empire in 476 and precedes the Early Modern Era. It is the middle period of a three-period division of Western history: Classic, Medieval and Modern...

 structure on the northwest corner of the city walls

Chester city walls

.Chester city walls consist of a defensive structure built to protect the city of Chester in Cheshire, England. Their construction was started by the Romans when they established the fortress of Deva Victrix between 70 and 80 AD. It originated with a rampart of earth and turf surmounted by a...

 of Chester

Chester

Chester is a city in Cheshire, England. Lying on the River Dee, close to the border with Wales, it is home to 77,040 inhabitants, and is the largest and most populous settlement of the wider unitary authority area of Cheshire West and Chester, which had a population of 328,100 according to the...

, Cheshire

Cheshire

Cheshire is a ceremonial county in North West England. Cheshire's county town is the city of Chester, although its largest town is Warrington. Other major towns include Widnes, Congleton, Crewe, Ellesmere Port, Runcorn, Macclesfield, Winsford, Northwich, and Wilmslow...

, England; it is attached by a spur wall to the Water Tower

Water Tower, Chester

The Water Tower is a 14th-century tower in Chester, Cheshire, England, which is attached by a spur wall to Bonewaldesthorne's Tower on the city walls. The tower, together with its spur wall, has been designated by English Heritage as a Grade I listed building...

. It has been designated by English Heritage

English Heritage

English Heritage . is an executive non-departmental public body of the British Government sponsored by the Department for Culture, Media and Sport...

 as a Grade I listed building. Built as part of Chester's defensive system, it was used in the 19th and early 20th centuries as a museum.

History

The tower has been documented since 1249. It was rebuilt or altered in 1322–26 when it became the gatehouse to the Water Tower. The Chester Mechanics' Institution was founded in 1835. The Institution wished to open a museum to show its artifacts and the city council leased the Water Tower and Bonewaldesthorne's Tower at a nominal rent for this purpose. The museum opened in 1838. A camera obscura

Camera obscura

The camera obscura is an optical device that projects an image of its surroundings on a screen. It is used in drawing and for entertainment, and was one of the inventions that led to photography. The device consists of a box or room with a hole in one side...

 was installed in the tower in 1840 and an observatory in 1848. Around this time a statue of Queen Anne

Anne of Great Britain

Anne ascended the thrones of England, Scotland and Ireland on 8 March 1702. On 1 May 1707, under the Act of Union, two of her realms, England and Scotland, were united as a single sovereign state, the Kingdom of Great Britain.Anne's Catholic father, James II and VII, was deposed during the...

 which had formerly been in the Exchange before it burned down was installed on the steps of the tower.

The Institution closed in 1876 and the exhibits came into the possession of the city council. Although it was recognised that the tower was not suitable as a museum, there was at the time nowhere else to show all the exhibits. The tower closed as a museum in 1901–02 while the city walls were rebuilt, and re-opened in 1903, attracting 12,000 visitors that season. The towers were closed to the public in 1916 and in the 1920s they were let for non-museum use. In 1954 they were bought by the Grosvenor Museum

Grosvenor Museum

Grosvenor Museum is in Grosvenor Street, Chester, Cheshire, England. It has been designated by English Heritage as a Grade II listed building. Its full title is The Grosvenor Museum of Natural History and Archaeology, with Schools of Science and Art, for Chester, Cheshire and North Wales...

, which reopened them to the public in 1962.

Architecture

The plan of the tower is rectangular. It is built in red sandstone

Sandstone

Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...

 coursed

Course (architecture)

A course is a continuous horizontal layer of similarly-sized building material one unit high, usually in a wall. The term is almost always used in conjunction with unit masonry such as brick, cut stone, or concrete masonry units .-Styles:...

 rubble

Rubble

Rubble is broken stone, of irregular size, shape and texture. This word is closely connected in derivation with "rubbish", which was formerly also applied to what we now call "rubble". Rubble naturally found in the soil is known also as brash...

 and stands on a tall plinth

Plinth

In architecture, a plinth is the base or platform upon which a column, pedestal, statue, monument or structure rests. Gottfried Semper's The Four Elements of Architecture posited that the plinth, the hearth, the roof, and the wall make up all of architectural theory. The plinth usually rests...

. Seven steps lead up from the walkway on the city walls to an arched doorway. On the opposite side another doorway leads on to the spur wall to the Water Tower. The top of the tower is battlement

Battlement

A battlement in defensive architecture, such as that of city walls or castles, comprises a parapet , in which portions have been cut out at intervals to allow the discharge of arrows or other missiles. These cut-out portions form crenels...

ed. Inside the tower is a fireplace and a closed staircase which is lit by a single slit window.