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.

A fairytale cottage in a wild and beautiful glen, this diminutive former schoolroom makes a perfect hideaway or writing retreat for two, or even one.

The tower was built as a folly in 1821 with a pretty sitting room on the first floor. The third floor was added in 1943 by the Germans as an observation point, with views in every direction.

This beautiful little pavilion has two distinct faces and has a breath-taking panorama. Approached from the wood, this rustic cottage with a thatched roof houses an elegant interior.

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.

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.

Brinkburn Mill sits next to the River Coquet at the bottom of a thickly-wooded valley. A mill has been on this site since medieval times, with the present building dating to about 1800.

This gatehouse is all that is left of Cawood Castle, once a stronghold of the Archbishops of York. It was here that Cardinal Wolsey was arrested for treason on King Henry VIII’s orders in 1530.

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.

Church Cottage was the very first Landmark acquired by Sir John Smith in 1965. A Victorian cottage,it is cosy accommodation in a beautiful part of Wales.

Built for John Lanvin in about 1835, the colourful front elevation is heavily decorated with flamboyant lotus-bud capitals. This second floor apartment is one of three.

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.

There can be no more romantic, remote or secluded cottage in Cornwall than this one, named after the creek on the Helford River near which it stands down a track in deep woodland.

The 18th-century Temple was one of the last additions to Stowe, one of the world’s most famous landscape gardens. The rooms are all circular, with moulded stone pilasters and plaster vaults.

The surviving cross-wing of a late-medieval timber-framed hall-house in a peaceful woodland clearing in the Kent Weald.