1) St. Petersburg – is the young city, it is only 300 years old, but among the largest cities of Europe it is considered as one of the oldest. The buildings erected in St. Petersburg till 1917 are almost completely preserved. Now there are about 18 thousand of such buildings. From Obvodnoj kanal to Neva and from the Alexander Nevski Monastery to the port the St. Petersburg looks practically the same as till 1917. There is no such number of preserved old buildings in any city of Europe or America. It is not for nothing St. Petersburg is called "an open-air museum". Besides, there are no more places in the world where it is possible to see simultaneously the constructions of such different architectural styles as classicism, eclecticism and modernist style.

2) The channel length of Neva is only 74 km, but, despite it, it flows across the territory that is a little less, than the territory of Italy. The delta of Neva includes Ladoga Lake, Onega Lake, Lake Saimaa, Ilmen Lake and also the Svir, Volkhov and Vuoksa Rivers. There is only one analogous water system in the world — the Great Lakes in North America. The main stream of St. Petersburg Neva bears more water, than Don and Dnieper taken one with another.

3) In St. Petersburg there is the highest cathedral in Russia – Saints Peter and Paul Cathedral, there is Romanov' burial vault here. Height of its bell tower with the gilded spike topped with a figure of the flying angel – is 122, 5 meters.

4) In wartime, during the Siege of Leningrad the most valuable buildings and sculptures were as far as possible hidden from bombings, and masked. "The Bronze Horseman" was overwhelmed in too deep with a with a sand bags, the gilded domes of St. Isaac's Cathedral and a spike of Saints Peter and Paul Cathedral were painted with gray paint, and for a spike of Admiralteystvo they sewed a special cover. Sculptures of the horse tamers on  the Anichkov Bridge that were invented up by Nicholas I's favourite baron Pyotr Clodt, caused such a delight that they had to be repeated for the royal palace in Berlin, the Neapolitan royal palace, "Belvedere" in Peterhof and stable yard Kuz'minka in the Moscow area.

5) In St. Petersburg there is the deepest subway in the world. The city was built on a fenland therefore tunnels of the subway it was needed to pave under the bedding rocks. Tunnels of the St. Petersburg's subway lie at depth about 70 — 80 meters.

6) St. Petersburg — is the capital of tramways. The extent of car track lines in the city earlier was more than 600 km. This fact is recorded in the Guinness Book of Records.

7) Angels most often occur among an urban sculpture of St. Petersburg. In total there are about 3000 angels around the city. In St. Petersburg there are three main angels, three keepers of the city: gold, silver and bronze. The first angel appeared over the city under the rules of Catherine the Great and wreathes the spike of the Saints Peter and Paul Cathedral. The angel looks at a height on the city and protects inhabitants from any evil spirits. The silver angel looks at the city from St. Isaac Cathedral and blesses people. The third - bronze angel is located at Palace Square. Trampling a snake, it looks from the top of Alexander Column and observes whether the city needs a help.

8) The "Blue" (" Sinij") Bridge in St. Petersburg thrown through the Moika River is the widest bridge in the city and one of the widest bridges in the world. Its width is 97, 3 meters. Because of its record width it almost equals to the width of St. Isaac's Square. Also there is an interesting fact - the width of a temporary bridge is almost three times more than its length. The name "Blue" (" Sinij") came from its initial shape: earlier the bridge was wooden and painted in bright blue color. In the 19th century the temporary bridge was reconstructed in a stone, however the bridge remained its name and color until now.

9) One of the most beautiful suburbs of St. Petersburg is Peterhof with its numerous fountains. Today in Peterhof there are 173 fountains and 3 operating cascades. This ensemble was recognized by the mondial cultural heritage UNESCO. In the 1720th years Peter the Great noticed one native trait of local places and decided to apply it for the purpose of Peterhof park's decoration. He noticed that water is rising here in a natural way from Ropshinskie elevations on thecreekbed of Shinkarki River and the whole system of channels, ponds and locks. Peter the Great charged the engineer Vasily Tuvolkov to develop the system of communicating vessels for creation of an ensemble of fountains. Thus, fountains of Peterhof became the real engineering miracle; they worked without pumps and complex water-retaining constructions. This system works to the present day, only the wooden pipeline was replaced with pig-iron.

10) St. Petersburg is called the "Venice of the North» because the water surface occupies about 10% of total square of the city. According to this indicator St. Petersburg wins first place among the cities of Russia and one of the first places in the world. St. Petersburg is located on 42 islands, it has over 300 bridges among which 21 adjustable and 24 pedestrian. From Troitsky Bridge it is possible to see 7 other bridges, and from Kashinyj Bridge (through the Griboyedov Canal) - the whole 9 bridges. There is a legend that the legendary Soviet pilot Valery Chkalov on his plane flew under Troitsky Bridge for what in a consequence he received a severe penalty.

11) St. Isaac Cathedral is the largest cathedral in Russia and the fourth in size in the world. Having risen on a colonnade of cathedral 43 meters high, you will get on the observation deck from where the entire city is clearly visible. In spite of cathedral's gabarits, during the years of the Great Patriotic War it was never subjected to direct shelling. Only once the casual shell damaged the western corner of construction. There are assumptions that during war fascists used the highest dome in the city as a reference point for firing. Maybe exactly for this reason values from other museums that they didn't manage to take out before blockade were hidden in the cellar of St. Isaac Cathedral. Also there is another interesting fact that during the war the cathedral's domes, covered with nearly 100 kilograms of pure gold, the residents covered in gray color to keep this wealth untouched by the enemy.