The Rumyantsev-Zadunaisky Estate, one of the outstanding monuments of Russian architecture, is located at Maroseyka Street, 17. Built in 1782, it sparks debates among researchers: some attribute it to V. I. Bazhenov, while others to M. F. Kazakov. It is possible that both architects participated in the creation of this building. The estate, executed in a style transitioning from baroque to early classicism, was erected for M. R. Khlebnikov. In 1793, it was acquired by General Field Marshal P. A. Rumyantsev-Zadunaisky, known for his feats in the Seven Years' War and the Russo-Turkish War. At his initiative, the interior walls of the house were adorned with paintings of battles, and a garden was laid out around the mansion, which was later destroyed.

After the count's death, the estate passed to his son, N. P. Rumyantsev, who was the Minister of Foreign Affairs, Chancellor, and a patron of the arts. His home often hosted notable figures such as V. A. Zhukovsky, N. M. Karamzin, and P. A. Vyazemsky. The count, being a Francophile, maintained a friendship with Napoleon, but upon learning of the war with France, suffered a stroke. In 1812, the estate housed the Moscow city administration established by Napoleon. In 1826, the building passed to Nikolai's brother, Sergey Rumyantsev.

In the 1880s, the building acquired its modern appearance: the facades were adorned with sculptures and decor, including a coat of arms with angels and the letter 'G', symbolizing the new owner, merchant Mitrofan Grachev. The sculptural figures on the facade allegorically represent agriculture, livestock, and the liberal arts. A residential building was erected in place of the garden, which was rented out. During the Soviet era, the building was raised by two floors, where communal apartments existed until the late 1960s, one of which was occupied by artist V. K. Kolenda. A plaque on the estate's gates remains, inscribed with 'FREE FROM POSTOY', indicating the payment of a tax for the construction of military barracks. Today, the mansion houses the Embassy of the Republic of Belarus.