Bask in a country-house high without leaving the city. Kenwood is a sublime 18th-century job by Robert Adam with a sigh-inducing southern view across Hampstead Heath, from within the green embrace of 112 acres. Inside, the walls are hung with paintings that would be the envy of the National Gallery, including Vermeer’s The Guitar Player, a John Singer Sargent, and a Rembrandt selfportrait. The title character of the 2014 film Belle was raised by Lord Mansfield in this house, and the film was shot here. There’s no better place to enjoy an English summer than on its acres of lawns or alongside its ornamental pond.