On June 27, 1901, the wedding of Grand Duchess Olga Alexandrovna and Prince Peter of Oldenburg took place in the church of the Gatchina Palace. Nicholas II gifted the newlyweds a mansion on Sergievskaya Street, previously owned by the princes of Baryatinsky.

Olga Alexandrovna left interesting memoirs recorded by her friend Yen Vorres. She recalled that living in her simple house away from the palaces was a great pleasure for her.

The modern appearance of the house can be seen in the photo at the end of the post. Its current address is Chaikovsky Street, house 46-48. It houses the St. Petersburg Chamber of Commerce and Industry and the Federal Tax Service Inspection No. 11. The interiors of the house have partially survived. A large coat of arms of the grand duchess, combining the coats of arms of Russia and Oldenburg, is placed on the pediment, under a small imperial crown, with two Varangians as shield bearers. The gates display the monograms of Olga Alexandrovna.

The house's decor is made of marble. At the top of the staircase is a mirror, one of three associated with mystical stories. The living room is adorned with carved oak. To decorate the interiors, Olga Alexandrovna invited talented masters: architect M.Kh. Dubinsky and artist N.N. Rubtsov. Significant funds were spent on this. For Olga, a talented artist with a good sense of humor, it became a refuge during a difficult period in her life.

Only in 1916 did the Holy Synod declare the marriage of Olga and Peter invalid. For 13 years, the spouses lived their own lives. The prince did not interfere in his wife's affairs and did not provide her with any assistance; however, he squandered a million gold rubles inherited by Olga from her brother Georgy. Together, they rarely appeared.