 The cathedral, containing the nave, two principal aisles and two further subsidiary aisles, is 114 metres (379 feet 6 inches) long and 50 metres (162 feet 6 inches) wide (across the transepts), with a height from the top of the vault of 29.5 metres (96 feet); the height of the cupola and the tower is 62.34 metres (202 feet 7 inches).In May 1420, the Treaty of Troyes was signed in the cathedral between Henry V of England, his ally Philip of Burgundy and Queen Isabel, wife of the mad Charles VI of France whereby the throne of France would pass to Henry on the death of Charles rather than to Charles' son the Dauphin.Henry married Catherine of Valois, the French king's daughter, shortly afterwards in Troyes, either at the cathedral or the church of St Jean.