In the Admiralteysky District of St. Petersburg, not far from Bataysky Lane and Bronnitskaya Street, there is a tiny Doinikov Lane hidden from prying eyes. It can be found on the map of modern St. Petersburg, but it is quite difficult to do so. Even its name is shrouded in the darkness of obscurity. Doinikov, by whose name this lane is named, was not only not an outstanding person, there is almost no information about him, except that he is a revolutionary figure who previously worked for a small tobacco factory located on Klinsky Prospekt. The only thing that Doinikov became famous for was his participation in the organization of strikes and death in 1919 in battles with Yudenich's detachments.

In fact, the building in Doinikov Lane is a former tenement house built in 1863 by the St. Petersburg architect Zanftleben. Initially, its location was called Gospitalny Lane, since it was here that the Semyonovsky Regiment hospital was located. Now this quiet lane is famous for the Guards Courtyard, whose houses and outbuildings are decorated with drawings dedicated to the soldiers of the Semyonovsky Regiment, customs and everyday life of that era.

Unknown artists designed the Guards Yard so skillfully that at first glance, the drawings can be mistaken for real paintings. A soldier is resting on a bench in the corner of the courtyard, and next to him, on the windowsill of one of the apartments, a huge cat collapsed, which, squinting under the rays of the sun, put his face in the evening breeze. Just above, you can see the wives of servicemen looking out of the windows, waiting for their tired husbands to return home. On the balcony, you can see an officer and a young lady chatting with each other, and the transformer box is presented in the form of a regimental stable — a pair of horses peeking out into the street, and the third one is being taken out for a walk. On the wall of one of the houses there is a map of the places where the Semyonovsky Regiment was located in St. Petersburg. And in the heart of the courtyard there is a children's town, which looks like a fortress, guarded by formidable cannons.