The Cathedral of Christ the Saviour is a Church in Moscow, Russia, on the bank of the Moskva River, a few blocks west of the Kremlin. With an overall height of 103 m (338 ft), it is the tallest Orthodox church in the world. The Cathedral took many years to build and did not emerge from its scaffolding until 1860. Some of the best Russian painters continued to embellish the interior for another twenty years. The Cathedral was consecrated on the very day Alexander III was crowned, 26 May 1883. A year earlier, Tchaikovsky's 1812 Overture debuted there. (source)
The Monument to Alexander II is a memorial of Emperor Alexander II of Russia, situated in the immediate surroundings of the Cathedral of Christ the Saviour in Moscow. Completed in 2005 and partly inspired by a destroyed imperial monument from 1898, the statue itself was paid for by private donations, with the rest of the monument mainly financed by public funding. The site for the new monument was chosen in part because Alexander helped lay the foundation for the original Christ the Savior Cathedral (destroyed in 1931 by Soviet leader Joseph Stalin) and ruled during its construction. (source) Thank you Marina!