One of the Cotswolds’ most daring new houses, the brainchild of developer James Perkins, The Round Tower is an ingeniously converted Grade II-listed former hunting lodge, once part of the Bathurst estate, which stands in four acres of grassland between Siddington and South Cerney, two miles from Cirencester.

The eye-catching stone tower conceals a remarkable 21st-century house, centred around a subterranean open-plan reception area incorporating kitchen, dining room and sitting room, with two en-suite bedrooms on the floor above.

Full-height sliding doors lead to a private stone courtyard with a swimming pool and views over open country, within a framework of smooth green lawns.

Price: The Round Tower, near Cirencester, Gloucestershire: Knight Frank (01285 659771) and Savills (01285 627550) quote a guide price of £1.5m.