The Cathedral of Christ the Saviour (Храм Христа́ Спаси́теля) is a Russian Orthodox cathedral in Moscow, Russia, on the northern bank of the Moskva River, a few hundred metres southwest of the Kremlin. With an overall height of , it is the third tallest Orthodox Christian church building in the world, after the People's Salvation Cathedral in Bucharest, Romania and Saints Peter and Paul Cathedral in Saint Petersburg, Russia.
The current church is the second to stand on this site. The authentic church, built during the 19th century, took more than 40 years to build, and was the scene of the 1882 world premiere of the 1812 Overture composed by Tchaikovsky. It was destroyed in 1931 on the order of the Soviet Politburo. The demolition was supposed to make way for a colossal Palace of the Soviets to house the country's legislature, the Supreme Soviet of the USSR. Construction started in 1937 but was halted in 1941 when Germany invaded the Soviet Union during World War II. Its steel frame was disassembled the following year, and the palace was never built. Following the dissolution of the Soviet Union, the current cathedral was restored on the site between 1995 and 2000.
When Napoleon Bonaparte retreated from Moscow, Tsar Alexander I signed a manifesto on 25 December 1812 declaring his intention to build a cathedral in honor of Christ the Saviour "to signify Our gratitude to Divine Providence for saving Russia from the doom that overshadowed Her" and as a memorial to the sacrifices of the Russian people. It took some time for work on the projected cathedral to get started. The first finished architectural project, by Aleksandr Lavrentyevich Vitberg, was endorsed by the Tsar in 1817. It was a flamboyant Neoclassical design full of Masonic symbolism.
Construction work was begun on the Sparrow Hills, the highest point in Moscow, but the site proved unstable. In the meantime Alexander I was succeeded by his brother Nicholas I. Profoundly Orthodox and patriotic, the new Tsar disliked the Neoclassicism and Freemasonry of the design selected by his predecessor.