This archway lies inside the grounds of Bolsover Castle, an impressive early 17th century castle built over the site of an earlier mediaeval fortress. The castle dominates the skyline as you approach the small town of Bolsover, and would undoubtedly have been more impressive during its heyday when it was owned by the Cavendish family.
This is the keep-like East Tower at Helmsley Castle in North Yorkshire, now in the care of English Heritage. The castle was begun in the 1100s but this tower was erected in the 1200s. The photo was taken on a sunny day but the clouds were gathering. Luckily, though, the brewing storm never materialised, the clouds passed and the sun came out again.
This is one of the niches, or secret alcoves, set into the old wall of the walled garden of Bolsover Castle in Derbyshire. Taken on a lovely sunny day it was unusually quiet and peaceful. The castle is in the care of English Heritage.
This is the remains of the keep at Peveril Castle which sits above Castleton in Derbyshire. The castle was started in 1080, shortly after the Conquest, but this keep was built in 1176 during the reign of Henry II.
Below is a picture of Cave Dale from the vantage point of the castle.