WORCESTER — On a short stretch of Westwood Drive in the exclusive Westwood Hills community, three magnificent mansions with seven-figure price tags have gone on the market.A three-story French chateau of the early 18th century Rococo style features gold leaf trim, cherub sculptures, marble finishes, Swarovski crystal chandeliers, a library modeled after King Louis XVI’s personal library, an indoor pool and manicured grounds like Versailles — listing for $2.188 million. […]