Mansion House, London the columned "Egyptian Hall", was so named because Dance used an arrangement of columns deemed to be "Egyptian" by Vitruvius. No Egyptian motifs were employed. It has twenty niches for sculpture. There was originally an open courtyard, later occupied by a saloon. The residence used to have its own court of law, since the Lord Mayor is the chief magistrate of the City while in office. There were eleven holding cells (ten for men and one, nicknamed "the birdcage", for women). A famous prisoner here was the early 20th-century suffragette women's rights campaigner Sylvia Pankhurst. Mansion House is home to
São Bento Mansion premises of the Ministry of the Sea, in Commerce Square. São Bento Mansion São Bento Mansion () or, officially, the official residence of the prime minister () is a late 19th-century building that, presently, serves as the official residence of the Prime Minister of Portugal. It is located in the Lisbon civil parish of Estrela, back-to-back with São Bento Palace, seat of the Assembly of the Republic, the Portuguese Parliament. The house was first built by capitalist Joaquim Machado Cayres in 1877, to serve as his private residence. The plot of land he bought for it had belonged to the