For many years recognized as the best place in Oia (and one of the best on the island) for a formal dinner, the 1800 has a devoted following among visitors and locals. The restaurant, housed in a splendidly restored neo-classical captain's mansion, has charm whether you eat in one of the formal indoor dining rooms or on the open-air rooftop terrace. Dishes are Greek with a difference, such as the tender lamb chops with green applesauce and the cheese pie filled not only with feta, but also with four island cheeses. Whenever possible, local ingredients, such as Santorini capers and sun-dried tomatoes, are used. As you might expect in a former sea captain's house, seafood is a specialty. The restaurant prides itself on presentation, and boasts that "Each plate resembles a canvas." One warning: The island's Vinsanto wine is often used in sauces, and it's a very sweet wine.