Unmissable children's entertainment, this museum is the home of Her Majesty's Coronation Coach. Standing nearly next door to the Queen's Gallery, the Royal Mews were designed by famed Regency-era architect John Nash. Mews were originally falcons' quarters (the name comes from their "mewing," or feather shedding), but horses gradually eclipsed birds of prey. Now some of the magnificent royal beasts live here alongside the fabulous bejeweled glass-and-golden coaches they draw on state occasions. COST: £5.50. Tube: Victoria or St. James's Park.