The Isaac Cathedral
This largest Russian cathedral was built by architect Auguste Montferrand 1818-1858.
St Isaac's Cathedral is one of the largest domed sacred buildings in the world. It is 111 m long, 97 m wide and 101.50 m high.
Services were held here until the October Revolution, and in 1928 the church became a museum. With the increasing religious freedom in the Soviet Union, it was possible to hold services in the cathedral again for the first time in 1990.
The church is dedicated to St. Isaac of Dalmatia, whose feast day coincides with the birthday of Peter the Great.
Impressive mosaics enchant the viewer.
In front of Issak Cathedral is the monument to Tsar Nicolaus I. It is remarkable that the horse stands on only two legs. There are only a few such monuments, e.g. in Vienna on Heldenplatz the equestrian statue of Archduke Charles by A. D. Fernkorn.