were used as an ad-hoc prison for high-ranking officials of the ancien régime. Te'eka Negist Mausoleum Burial place of Emperors Menelik II and Lij Iyasu and Empresses Zewditu and Taytu. Shengo Hall The Shengo hall was built by the Derg at a cost of $18 million. It was prefabricated in Finland, and, at the time of its construction, was the largest prefabricated building in the world. It was opened on 9 September 1987 after the promulgation of the new constitution and election of the assembly, to a grand ceremony that counted Presidents Kenneth Kaunda of Zambia, Hassan Gouled Aptidon of Djibouti and Hosni Mubarak of Egypt as guests. After the fall of the Mengistu government, the Ethiopian Parliament convened its previous chambers, and today the building is used as an occasional meeting place. Prime Minister's Office The building now housing the Prime Minister's Office was built at the same time as the Shengo Hall to house the offices of President Mengistu Haile Mariam. After his ouster it became the Prime Minister's Office, and was renovated in 2018-19. Bibliography Livio Sacchi: Architectural heritage in Ethiopia. Two imperial compounds in Mekele and Addis Ababa Skira, 2012 References External links Website related to Ethiopean palaces Royal residences in Ethiopia Buildings and structures in Addis Ababa Palaces in Ethiopia Houses completed in 1886