St. Petersburg is a city with a rich history reflected in old maps. The Moscow district, which developed dynamically in the 20th century, could have become a new center of the city. The lecture will discuss how toponymy has changed, where the border of St. Petersburg was 111 years ago, and what lies behind unusual names like "Kekerekecksinen." St. Petersburg is a city where history is read not only in architecture but also in maps. Looking at old plans, we most often see the familiar outlines of Vasilievsky Island, the Admiralty side, or Petrogradka. However, in the 20th century, an area emerged that could have become a new center of the city - Moscow. The lecture will discuss how this territory developed and why it was considered promising for the expansion of the urban structure. Initially, the "Moscow side" referred to a completely different area, and the toponymy of the district hides many interesting stories. Listeners will learn where the city's border was in the 18th century, why the name "Kekerekecksinen" appeared on maps, where the mysterious "Meat Museum" was located, and what Moscow Avenue looked like 111 years ago. The lecture is led by engineer and local historian Alexander Kizik, who will guide listeners through time, revealing urban mysteries and showcasing ancient maps. We share on KudaGo where to go in St. Petersburg this weekend for free.