The Kostaki Mansion, which houses the Trabzon Museum, was constructed in the early 1900s on Zeytinlik Street as the residence of banker Kostaki Teophylaktos. The architects of the mansion have not been identified, although it is known that they were Italian and that many of the materials used in the building were imported from Italy. Following the bankruptcy of Kostaki Teophylaktos in 1917, all his assets were confiscated, including the building. The Nemlioğlu family subsequently purchased the mansion. During the years of the National Struggle, the building served as a headquarters. Atatürk, his wife Latife Hanım and their entourage stayed in the house between 15 and 17 September 1924. Between 1927 and 1931, the building was used as a government office, and between 1931 and 1937 as the General Inspectorate building. In 1937, the building was transferred to the Ministry of National Education, and after 50 years as a Girls' Vocational School, it was transferred to the Ministry of Culture in 1987 to be converted into a museum. The mansion was restored to its original state over a period of 13 years between 1987 and 2001. It was opened to the public in 2001 as the Trabzon Museum, where archaeological and ethnographic artefacts are displayed. The basement of the mansion was set up as an archaeological department. The section, comprising four rooms, displays artefacts from the Early Bronze Age to the end of the Ottoman period. The first room, which serves as the entrance hall, contains the Roman bronze statue of Hermes from the 2nd century AD, discovered during the rescue excavations in Trabzon Tabakhane in 1997. This is one of the most significant artefacts in the museum. The ground floor of the mansion is organised as a living museum. Some of the rooms on this floor still retain their original wallpaper. These include a living room, a study, a day room, a dining room and a games room. The hall was used for entertainment, including music concerts and conferences, during the period. The first floor, which is simpler than the ground floor, is organised as an ethnographic section. In addition to the Islamic artefacts, weapons, manuscripts, weavings, jewellery and clothing sections, the 5th President of the Republic of Turkey Cevdet Sunay section and the bedroom of the Great Leader Atatürk are located on this floor. In 1924, the furniture of Atatürk's bedroom was purchased from the second owners of the villa, the Nemlioğulları family, to be exhibited.