Saint Petersburg no relation Yaroslavl
Architecture
Architecturally, the cathedral differs from Saint Petersburg's other structures. The city's architecture is predominantly Baroque and Neoclassical, but the Savior on Blood harks back to medieval Russian architecture in the spirit of romantic nationalism.  It intentionally resembles the 17th-century Yaroslavl churches and the celebrated St. Basil's Cathedral in Moscow.The church contains over 7500 square meters of mosaics—according to its restorers, more than any other church in the world. This record may be surpassed by the Cathedral Basilica of St. Louis, which houses 7700 square meters of mosaics.
The interior was designed by some of the most celebrated Russian artists of the day—including Viktor Vasnetsov, Mikhail Nesterov and Mikhail Vrubel — but the church's chief architect, Alfred Alexandrovich Parland, was relatively little-known (born in Saint Petersburg in 1842 in a Baltic-German Lutheran family). Perhaps not surprisingly, the church's construction ran well over budget, having been estimated at 3.6 million rubles but ending up costing over 4.6 million. The walls and ceilings inside the church are completely covered in intricately detailed mosaics — the main pictures being biblical scenes or figures — but with very fine patterned borders setting off each picture.
no relation