He then settled in Saint Petersburg, working in the Imperial Academy of Arts and painting huge panoramas of historical battles. In 1904-12 Roubaud taught at the St. Petersburg Academy of Arts as a professor. During this time he painted the Siege of Sevastopol, a panoramic painting. In the mid-19th century, the various panoramic paintings became a fashionable way to depict landscapes and historical events. The "panorama" was a 360-degree visual medium patented by the artist Robert Barker in 1787. This was a new thing for the time and for the audiences in Europe of this period these paintings were a sensation. The paintings created a new illusion, transporting the viewer into a virtual reality, creating the perception of being physically present in the middle of the events. When standing in the middle of the 360 degree panorama this created the impression of standing in a new environment.