Located on an island in the middle of the Ros River. City of Korosten.Ukraine.
It was built in 1789 by Prince Stanisław Poniatowski, its architecture, in the neo-Gothic style, looks stunning. Of particular note are the entrance gates, executed in the spirit of French defensive architecture. Many contemporaries note that the palace (along with the adjacent territory, park) was long considered one of the richest in Europe.
Founded in 1782 and intended as his own summer residence. In fact, the building was erected on the remains of a fortress of Polish princes, which was built on the Ancient Rus' hillfort of the town of Korosten. Initially, talented architects named Lindsay and Muntz worked on the building project. With the participation of Prince Lopukhin, the exterior of the building was significantly transformed – separate features of romanticism, classicism, supplemented with elements of Gothic, appeared. Fortunately, the revolutionary events of those times did not affect the integrity and present beauty of the palace. To this day, it has survived practically in its original form. The history of the property is controversial.
Lopukhin, in 1799, purchased the estate from the Polish leader Stanisław Poniatowski, giving him 10,000 rubles in silver. A corresponding decree was separately prepared. It stated that along with the palace, trees, lands, crockery, library, and garden were transferred. One of the heirs of the estate was the most enlightened Prince Nikolai Petrovich Demidov. If the former owners of the object had enough income not only for living but also for maintaining the entire economy, then the newly minted owner began to experience significant financial difficulties. The situation was exacerbated by the abolition of serfdom, the improper lifestyle of Nikolai Petrovich. Even the work of two sugar factories of his own did not save the situation, despite the fact that other industrialists made good money on similar enterprises. It got to the point that by 1897, Lopukhin-Demidov was forced to take out a loan of 2.5 million rubles. The estate, which was estimated at that time at 4,167 thousand rubles, was mortgaged. Such significant "infusions" did not change the situation. Therefore, the prince decided to transfer his debts to the state. In 1901, he applied for guardianship of the estate in order to reduce the total debt. The historical importance of the palace, its integrity played a positive role in this matter.
By 1902, the unfavorable condition of the estate served as an impetus for its sale, transfer to the state balance. The lack of working capital, excessive indebtedness, the obligations of the Lopukhin-Demidov family contributed to the activation of this process. Numerous efforts did not allow getting rid of debts. Again, in 1907, the palace was laid down for another 66 and a half years. The composition of the guardianship management changed several times, while the total debt continued to grow. The situation began to get out of control, and Nikolai Petrovich turned to the emperor for help. It turned out that the cause of all the troubles was the manager, whom they did not prosecute after proving his guilt. Nikolai Petrovich planned that within the next three to four years, he would be able to settle private debts, a little later – with the rest. At the end of 1910, the Most Enlightened One died. His wife applied for the preservation of guardianship over the inheritance. The descendants of Lopukhin-Demidov (sons) rarely visited the estate, preferring other countries.
The estate went through a difficult time during World War II, in 1944. In Korosten, the 80-thousand-strong army of German invaders was based, who were successfully "knocked out" from their positions .For this operation, the city was awarded the Order of the 1st degree. By February 14, the city was completely liberated from the fascists. Today, there is a thematic museum in the estate dedicated to the Great Battle.