Valletta is Malta's lilliputian capital, built by the Knights of St John on a peninsula that's only 1km by 600m. Its founder decreed that it should be 'a city built by gentlemen for gentlemen', and it retains its 16th-century elegance. It may be small, but it's packed full of sights; when Unesco named Valletta a World Heritage site, it described it as 'one of the most concentrated historic areas in the world'.