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.

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

Houghton West Lodge is one of four houses that guard the approaches to Houghton Hall,  one of England’s finest Palladian houses and once home to Britain's first Prime Minister.

A fine, two-storey Jacobean porch salvaged from a great house once beloved of the poet and playwright John Dryden but now lost.

The Summerhouse stands in beautiful woodland on the Shuttleworth Estate. The outstandingly fine brickwork of this foursquare folly is likely to date from the early 18th century.

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.

Mill House dates from 1700 and is mainly built of stone with a thatched and slated roof. No. 1 is the slightly larger of two cottages and has a wide fireplace in the sitting room.

45a Cloth Fair is a fine Georgian house close to Smithfield Market.  It is an oasis of relative calm in central London.

Designed and constructed by James Mansergh and Robert Rawlinson, work began on Appleton Water Tower in 1877 to provide a clean water supply to the Sandringham Estate.

In the middle of a hamlet, Ford Cottage overlooks the bubbling stream as it winds its way towards the sea half a mile away at Duckpool.

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.

Villa dei Vescovi is a Renaissance villa nestled in the vineyards and orchards of the Euganean Hills. One of two rooftop apartments, with views of the elegant orchards.

Villa dei Vescovi is a Renaissance villa nestled in the vineyards and orchards of the Euganean Hills. One of two rooftop apartments, with views of the elegant orchards.

Marshal Wade’s House stands in the centre of Bath, neighbouring the Roman Baths and Bath Abbey. It offers exceptional views of Jacob’s ladder, the famous carving on the Abbey’s west front.

Deep in the Surrey countryside stands a gatehouse built in the 19th century by one of this country’s most influential and talented architects, A W N Pugin.