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.

We think the Music Room was built in around 1730 as a garden pavilion. The streets of Lancaster grew around it. The Baroque interior alone took 6,000 hours of craft skills to repair.

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.

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.

A unique remnant from the Napoleonic era, the Grade II* listed brick structure is the only surviving semaphore tower in Britain.

Croscombe Old Hall was built in about 1420, originally as the main hall of a grand manor house. Its survival today is thanks to its revised purpose as a Baptist chapel from around 1720.

One of the first Landmarks to be opened by the Trust in 1967, Paxton’s Tower Lodge is a fine example of an early 19th century Welsh cottage.

A near perfect Dartmoor longhouse built in about 1500 in the peaceful farming settlement of Lettaford, Sanders offers an antidote to the noise and bustle of the modern world.