The remains of Bolingbroke Castle can be found within the picturesque village of Old Bolingbroke, on the southern edge of the Lincolnshire Wolds.
Bolingbroke Castle is a prime example of 13th century castle design complete with a large gatehouse, round towers and moat. Today the castle is an evocative ruin preserved to ground floor level, with several rooms within the towers still surviving.
This castle was built by Randulph de Blundeville, the Earl of Lincoln, and became the home of the powerful John of Gaunt in the 14th century. It is most famous as the birthplace of his son, Henry of Bolingbroke, who went on to become King Henry IV.
The castle came to prominence again in the Civil War serving as a royalist garrison, which was laid siege by a Parliamentarian force who in October 1643 defeated a relieving detachment of Royalists at the nearby Battle of Winceby.
The site is managed by Heritage Lincolnshire in co-operation with English Heritage.
The castle is open every day from dawn to dusk and admission is free.