Deep in the woods sits this octagonal folly – with a real surprise inside. The ceiling and walls of the main room are festooned with shells, while in the basement is a cold plunge pool.

The Chapel is a tiny grey granite building in the rural hamlet of Lettaford, a settlement on the edge of Dartmoor that has been lived in since at least 1300.

This very clever scale model of a French chateau sits on a hill above the River Trent in the middle of the Lincolnshire countryside.

A clock tower overlooking the Exe estuary, ‘like a sleek racing yacht turned through 90 degrees and planted in the beach.’

A tiny, circular tower standing on the boundary of a cricket pitch, Prospect Tower was built around 1808. Approached along an avenue of walnut trees, Lord Harris called it his “whim.”

A Georgian folly within an outstanding Picturesque garden, the Ruin was built in about 1766. On the edge of a steep wooded gorge, it was one of several buildings scattered across the gardens.

This tiny pavilion was a majestic grandstand for the enclosure in front. It is a mature expression in miniature of all that was best in Tudor and Jacobean architecture.

Whiteford Temple is an ornamental granite folly with views towards the Tamar Estuary. It was built in the 18th century for Sir John Call, a military engineer who had made a fortune in India.

This eighteenth-century Gothic summerhouse sits beside the River Esk near Carlisle. Remote and peaceful, the three large windows in the main room give striking views over the river.

One of three Landmarks in the remote upland hamlet Rhiwddion, Ty Capel was built in 1860 for the slate quarrying community that once lived and worked here.

A cosy timber building in the atmospheric hamlet of Coombe, Chapel Cottage arrived in Coombe in about 1860 on wheels. Enjoy fine views over idyllic orchards that lead down to a stream.

The College was possibly the first school in the country to be founded by a woman in 1506. With thick stone walls and an open fire, there are views across the fields and Dartmoor beyond.

This 18th-century tower gives striking views of the historic market town of Richmond. Inside, three single octagonal rooms are decorated in an elaborate cocktail of classical and Gothic styles.

Tucked away in the pinewoods of the Shuttleworth Estate, Keeper’s Cottage is a model gamekeeper’s home from the late 19th century. The estate was once renowned for its shooting parties.

Situated on the Worcester and Birmingham Canal, Lock Cottage was built between 1790 and 1815. Many lock cottages were ruthlessly demolished during the 1950s, making this a rare survivor.