This Italian-designed mansion, built for a Russian merchant and completed in 1913, briefly hosted Atatürk in 1924. The ornate interiors and original furnishings put most Ottoman re-creations to shame, with high-ceilinged rooms displaying ethnographic and Islamic artefacts, mostly labelled in English. The basement archaeological section also has significant pieces, including a flattened bronze statue of Hermes from local excavations at Tabakhane and some beautiful wooden Byzantine icons.