Мамонова дача, Federal cultural heritage estate in Gagarinsky District, Russia

Mamonova Dacha is a noble estate in Gagarinsky District featuring classical architectural details and a domed ballroom structure. The main building sits on the grounds of the Institute of Chemical Physics today, surrounded by a park with historic linden tree rows and original ponds.

The estate was built between 1756 and 1761 by architects Savva Chevakinsky and Ivan Zherebtsov for Prince Vasily Dolgorukov-Krymsky. In the early 19th century it passed to Prince Nikolai Yusupov, who had the main building rebuilt in Empire style by Osip Bove. After Yusupov's death in 1831, Count Matvey Dmitriev-Mamonov inherited it; his name became attached to the estate. He died there in 1863.

The estate shows how Russian noble families transformed their summer retreats into year-round residences for entertaining guests. The surviving linden tree alleys and ponds in the park reflect the lifestyle and landscaping choices of its former owners.

The estate buildings at 4 Kosygina Street belong to the Institute of Chemical Physics and the Institute of Physical Problems of the Russian Academy of Sciences, so the historic house and park are not open to the public. Memorial plaques to Pyotr Kapitsa and Lev Landau are mounted on the walls of the Institute of Physical Problems. The park complex has held the status of a regional cultural heritage object since 3 February 2009.

Count Matvey Dmitriev-Mamonov, a veteran of the 1812 war and possible model for Pierre Bezukhov in Tolstoy's War and Peace, was declared mentally ill after refusing to swear allegiance to Nicholas I in 1825 and kept under house arrest here. He died in 1863 when his clothes, soaked in cologne, caught fire. His surname gave the estate the name Mamonova Dacha.