Further additions to the castle at this time included individual chambers for the King and Queen, a new chapel and stables.

[1][3] Prominent people held as prisoners in the crypt of the Agricola Tower were Richard II and Eleanor Cobham, wife of Humphrey, Duke of Gloucester, and Andrew de Moray, hero of the Battle of Stirling Bridge.

[4] During the Wars of the Roses, Yorkist John Neville, 1st Marquess of Montagu was captured and imprisoned at the castle by Lancastrians following the Battle of Blore Heath, near the town of Market Drayton, Shropshire, in 1459.

[5] Outside the outer bailey gate was an area known as the Gloverstone where criminals waiting for execution were handed over to the city authorities.

[4] In 1696 Chester mint was established and was managed by Edmund Halley in a building adjacent to the Half Moon tower.

He also built two new wings, one to act as barracks, the other as an armoury, and designed a massive new entrance to the castle site, styled the Propylaeum.

[1] The architectural historian Nikolaus Pevsner comments that Harrison's work constitutes "one of the most powerful monuments of the Greek Revival in the whole of England".

[7] In February 1867, Irish Fenian Michael Davitt led a group of IRB men from Haslingden on an abortive raid for arms on the castle.

[9] In 1925, after being used for 200 years as a warehouse and ammunition store, the crypt and chapel in the Agricola Tower were reconsecrated by the Bishop of Chester for the use of the Cheshire Regiment.

This consists of a massive entablature supported on widely spaced (areostyle) Doric columns, flanked by temple-like lodges.

[12] To the left is the former barracks block which is now the home of the Cheshire Military Museum and an army cadet detachment.

Its ceiling is covered with frescos dating from the early part of the 13th century which depict the Visitation and miracles performed by the Virgin Mary which were revealed during conservation work in the 1990s.