From the outside, this rococo mishmash of towers, crenellations, and white stucco is dazzling in its faux-medieval splendor. Its architect and owner, Sir Horace Walpole (1717–97) knew a thing or two about imaginative flights of fancy—the flamboyant son of the first British prime minister, Robert Walpole, he all but single-handedly invented the Gothic novel with The Castle of Otranto (1764). Once you pass through Strawberry Hill's forbidding exterior, you'll experience explosion of color and light, for Walpole boldly decided to take elements from the exteriors of Gothic cathedrals and move them inside. The detail is extraordinary, from the cavernous entrance hall with its vast Gothic trompe l'oeil, to the Great Parlour with its Renaissance stained glass, to the Gallery, where extraordinary fan vaulting is a replica of the vaults found in Henry VIII's chapel at Westminster Abbey. Neglected for years, Strawberry Hill reopened in 2011 after a stunningly successful £9-million restoration. The gardens have also been meticulously returned to their original 18th-century design, right down to a white marble loveseat sculpted into the shape of a shell. You can book a tour of the house at twilight for £20, including a glass of Prosecco.