The Masonic garden of Prince Alexander Borisovich Kurakin, known as the "diamond prince," is a unique place. Kurakin, born on January 18, 1752, and died on June 24, 1818, was a Russian diplomat from the Kurakin family, holding positions as vice-chancellor in 1796, a member of the State Council in 1810, senator, and chancellor of Russian orders in 1802. Due to his love for jewels and his ability to present himself, he earned the nickname "diamond prince." In 1700, Peter I gifted B. I. Kurakin about 25 thousand hectares of land along the Khoper and Serdoba rivers, centered in the village of Borisoglebskoye, later renamed Kurakino. In 1782, Catherine II exiled Prince Alexander Borisovich Kurakin to this estate in the Saratov province for spreading Swedish Masonic lodges, considering his influence on the heir to the throne, Pavel Petrovich, harmful. In exile, the prince named his estate "Nadezhdino" or "Nadezhino." According to Wigel, in his magnificent solitude, he created a semblance of a court where poor nobles held positions as chief palace managers, chamberlains, and masters of ceremonies for a significant fee. His retinue included a secretary, a doctor, a conductor, a librarian, and many others without official titles, enlivening his solitude.

The main house, built in 1795, had 80 rooms, and the park was adorned with pavilions named the Temple of Glory, the Temple of Truth, the Temple of Patience, and the Repository of Eternal Feelings. The paths in the park bore names such as Unexpected Consolation, Overcome Difficulties, True Understanding, Frequent Repetition, Remembrance of Past Pleasures, Swift Achievement, Faithful Lovers, and Brother Stepan. In the center of the park stood a black boulder with a golden inscription "Memento mori." According to Kurakin's design, the park was meant to represent "an extract of the entire universe." After a fire in 1922, the palace remained as a romantic ruin.