Palazzo Margherita

Palazzo Margherita was built to Gaetano Koch's design for Rodolfo Boncompagni Ludovisi, Prince of Piombino, on the ground of the Villa Ludovisi his family was subdividing; Roma Capitale gives the date as 1890 and Italian Wikipedia as 1886-1890. Italian Wikipedia records that the prince built it to replace Palazzo Piombino on via del Corso, from which he had been expropriated, and that the building incorporates at its rear the Palazzo Grande of 1622, the original nucleus of the villa, which Italian Wikipedia says is neither visitable nor visible from the street. The palace passed to the House of Savoy in 1900 and was the residence of the Queen Mother Margherita, from whom it takes its name, until her death in 1926. Accounts of the American tenancy differ: Roma Capitale says the Embassy of the United States has been here since the end of the Second World War, while Italian Wikipedia says the palace became the Embassy in 1931 and was bought by the United States Government in 1946. Italian Wikipedia records that the trees of this garden and those of the Casino dell'Aurora are the last remnant of the villa's park.

The building is the diplomatic mission of the United States in Italy. It stands on Italian soil and is subject to Italian law. Its premises are inviolable under the Vienna Convention on Diplomatic Relations, which binds Italy to protect them; that is an obligation on Italy, not a transfer of sovereignty, and the palace is not United States territory.

Roma Capitale states that the palace is closed to the public and can be seen only from outside.