For 500 years, until the English and Scottish crowns were united in 1603, Carlisle Castle was the principal fortress of England’s ‘Western March’ against Scotland. Held to siege ten times in its history, Carlisle Castle is the most besieged place in the British Isles. From the 18th century to the 1960s it was the headquarters of the Border Regiment, one of the oldest in the army. English Heritage now shares the site with a number of organisations, notably the Territorial Army and the Museum of the Border Regiment.
