Buckingham Palace forms the architectural core of the palace was built for the first Duke of Buckingham and Normanby in 1703 to the design of William Winde. The style chosen was of a large, three-floored central block with two smaller flanking service wings. Buckingham House was eventually sold by Buckingham's natural son, Sir Charles Sheffield, in 1761 to George III for £21,000. Sheffield's leasehold on the mulberry garden site, the freehold of which was still owned by the royal family, was due to expire in 1774. Under the new Crown ownership, the building was originally intended as a private retreat for King
Staszic Palace need for an Orthodox chapel, and in 1668 another Polish king, John II Casimir, transferred the chapel to the Dominican Order, who would be caretakers of the building until 1808. In 1818 the building was purchased by Stanisław Staszic, a leader of the Polish Enlightenment, who ordered its renovation. The architect in charge was Antonio Corazzi, who designed the palace in a neoclassical style. After the renovation (1820–23), Staszic transferred the building to the Society of Friends of Science, the first Polish scientific organization. On 11 May 1830 a landmark was added to the palace, as Julian Ursyn Niemcewicz unveiled