St. Michael’s or Engineer Castle, the largest architectural monument, the final story themselves Petersburg architecture of the XVIII century. Its name Mikhailovsky Castle obliged the occupants temple of Archangel Michael, the patron saint of the Romanov dynasty, and fad Paul I, who took the title of Grand Master of the Order of Malta, called all its palaces “locks”; the second name – “Engineering” comes from there is since 1823 the Chief Engineering School. The only known case in the history of Russian architecture, as a secular architectural structure named not in honor of the owner, by name or area of destination, and in honor of svyatogo.Zamok was built in 1797-1801 years, he laid the first stone of February 26, 1797. Palace was designed by architect Vasily Bazhenov on behalf of the Emperor Paul I, who wanted to make it his main official residence. I supervise the construction project architect V. Brenna who has long been wrongly considered the author of the project). Brenna reworked the original palace of the project and created the artistic decoration of its interiors. November 8, 1800, the day of St. Archangel Michael, the castle was solemnly consecrated, but work on its interior decoration still lasted until March 1801. After the emperor’s assassination, 40 days after the housewarming, Mikhailovsky Castle was abandoned and the Romanovs on two decades has come to desolation. In 1823 the castle occupied the Main Engineering School, which became his second name. Since February 1823 the castle officially is called “Engineering” .K 300th anniversary of the city, the castle was renovated and restored many of the interiors in the form in which were with Paul, as well as the inscription on the facade of the (previously closed sheet metal) and statues from summer garden. There have been reconstructed and are open-preserved fragments of the Resurrection underground channel and three-span bridge – part of the engineering and fortifications surrounding the castle. The now fully restored image of several rooms, including the Throne Room of the Empress Maria Feodorovna, Shared dining hall, St George’s Hall, Marble Gallery. The renovated rooms are located museum exhibition “Ancient Subjects in Russian Art”, “Outdoor Sculpture Foundation”, “The Renaissance in the works of Russian artists” and “History of the castle and its inhabitants.” Next to the Mikhailovsky Castle monuments to Peter I and Paul I.