The Leman Mansion, designed in the neo-Gothic style, is located on Granatny Lane in Moscow. Its project was developed by architect Adolf Erichson for Anna-Louise Leman, the wife of honorary citizen of Moscow Robert-Nils Karl Leman. Since 1937, the building has been under the management of the Union of Soviet Architects, and after renovations in 1938 and 1941, it became part of the ensemble of the Central House of Architects. Since 1992, it has been recognized as a cultural heritage site of Moscow.

According to the archives of the City Administration, in January 1896, the plot was divided into two parts. The land facing Granatny Lane remained with Anna Leman and was considered the most expensive in the capital. The transaction was likely conducted according to merchant traditions: the property was registered in the wife's name, but was effectively managed by the husband. In the spring of the same year, all old buildings were demolished, and by the beginning of autumn, under Erichson's guidance, a new estate ensemble was erected.

The main mansion is designed in the Gothic style with elements of Tudor style, which is also reflected in the outbuildings: the carriage house, stable, and fence. Erichson's original project was eclectic and massive, but during construction, it was modified to be lighter and more cohesive. The asymmetrical design and stepped shape of the building give it expressiveness. The roof is covered with tiles, and the central element of the roof is a decorative chimney pipe. The mansion is built of red brick, with white decorative elements: arcature belts, pilasters, finishing of the risalits, and window frames.

Two years after the completion of construction, Anna-Louise Leman sold the mansion to the provincial leader of the nobility, Peter Bazilevsky. The purchase agreement dated June 8, 1898, states that she sold the house for 190 thousand rubles and the movable property in the hall and living room for 10 thousand rubles to retired rotmistr Peter Alexandrovich Bazilevsky.

Peter Bazilevsky lived in the estate with his family and servants. In 1911, at his direction, a small extension and a stone descent to the semi-basement were added to the southern facade, but the overall appearance of the estate remained unchanged.

After the revolution, the mansion was nationalized. In 1919, it housed the All-Russian Main Headquarters of the Revolutionary Military Council, and a year later, it was replaced by the Central Bureau for Foreign Service. Several rooms were occupied by the 'Agro-Joint' division of Joseph Rosen. From 1933 to 1937, the building housed the office of the French embassy. In 1937, the mansion was transferred to the Union of Soviet Architects.