A major adjustment in the historic center of the plan of Gatchina has made the construction of the cathedral in the city of St. Paul. From the east - the garden belonging to the temple, bordered on the village Gatchina Small, but because the street was called Malogatchinskoy. Due to the construction of the temple was moved to the village of Warsaw railway. Part of the street, located to the east of the temple to keep the old name. And the segment Malogatchinskoy street that was on the west of the temple before the start of the Grand Avenue became known as the Cathedral.

Before Cathedral Street, opposite the Grand Avenue, it is located one of the most monumental buildings in the city, which until 1917 acted Orphan Institute. It is an object of cultural heritage of federal importance.

This is - three-storey building, once it is one of the most famous educational institutions of Russia .  There taught Konstantin Ushinsky (legal subjects and Russian literature), Karl Albrecht Franzevich (teacher of music and singing), Ivan Kupriyanov Kupriyanovich (geography), Yegor Gugel Osipovich .  Over the years, led Orphan Institute were Franzevich Nikolai Schilder, Ivan Bogdanovich Crater, Orestes L. Semenov .  Graduates of this school were outstanding chess player Mikhail Chigorin, painter Fyodor Vasilyev, an economist Vasily Gavrilovich Jarocki, theater director Alexei L. Gripich physicist Ivan Obreimov known politician, a Bolshevik Boris A. pearls aircraft Vladimir K. Gribovsky, mathematician Boris Alekseevich Venkov musician Dmitri Lebedev, pilot, Hero of the Soviet Union Vladimir sandals and other .

Orphan Institute was founded in 1803 at the request of the Empress Maria Feodorovna. Initially it was called Rural Orphanage. In training and education to children of both sexes took 7 years. Classes were designed for 600 pupils. At the end of this institution graduates to enter the Petersburg Foundling Hospital, which prepares young people for higher education, and girls - for governesses. Children and adolescents in a rural educational home received basic knowledge and handicrafts.

In 1823 the school moved into a building, designed by DI Quadri. The building in terms of an L-shape. The walls are built of yellow plates. Each façade of 19 windows. On the ground floor window frames are decorated with embossed frames. In the second - just frames. Central five windows are framed with triangular pediments that "resonate" with a triangular pediment. The windows on the third floor - the square, small, decorated with relief - fan-Rust.

The fence around the building is decorated with semicircles. Gates reminded triumphal arches. Passages gate - semicircular framed profile Archivolt. They completed a massive entablature and pilasters. The cornice is decorated with an attic.

In the 30 years of the 19th century, the Foundling Hospital was reorganized and became the men's eight-grade grammar school for orphans. Since 1837 the gymnasium is named Orphan Institute. To do this place had the right to an orphan of noble origin to 12 years. There was prepared home teachers, and later - the Office of the officials. In 1855, the institute was renamed the Nikolaev, in honor of Emperor Nicholas I. Gatchinsky Institute had untouchable capital in more than 4 million rubles. Beginning in 1848 there appeared a female guest house, later converted into a girls' gymnasium. Today the building Orphan Institute is a boarding school.