Gruyères, Switzerland Gruyères is famous for its namesake cheese, whose mild, nutty flavor melts so well in fondue. But few are familiar with the town itself, a medieval hamlet in the upper valley of the Saane River in western Switzerland. A wide, stone-paved street leads up to the magnificent 13th-century Gruyères Castle, with its imposing fortifications and expansive views of the surrounding Alpine foothills.
Marvão, Portugal There are dramatic mountainside forts, and then there is Marvão, the king of them all. Located in the southeastern Alentejo region of Portugal, this town is centered around a Moorish castle that was Christianized in the 13th century.