Aleksandr Lavrentyevich Vitberg no relation Masonic symbolism
Original cathedral
Construction
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.  He commissioned his favorite architect Konstantin Thon to create a new design, taking as his model Hagia Sophia in the Ottoman capital Constantinople (present day Istanbul, Turkey). Thon's Russian Revival design was approved in 1832. A new site closer to the Moscow Kremlin was chosen by the Tsar in 1837. A convent and church on the site had to be relocated, so the cornerstone of the new church was not laid until 1839.
The cathedral took many decades to build; the scaffolding was not taken down until 1860. Its painting was overseen by Evgraf Sorokin, and thereafter some of the best Russian painters (Ivan Kramskoi, Vasily Surikov, V. P. Vereshchagin) continued to embellish the interior for another twenty years. The giant dome of the cathedral was gilded using the new technique of gold electroplating, replacing the older and insecure technique of mercury gilding. Although Tchaikovsky's 1812 Overture was written with the building's completion in mind, it had its world premiere in a tent outside the unfinished church in August 1882. The cathedral was consecrated on 26 May 1883, the day before Alexander III was crowned.The inner sanctum of the church (naos) was ringed by a two-floor gallery, its walls inlaid with rare sorts of marble, granite, and other stones. The ground floor of the gallery was a memorial dedicated to the Russian victory over Napoleon. The walls displayed more than 1,000 square metres (11,000 sq ft) of Carrara bianca marble plaques listing major commanders, regiments, and battles of the Patriotic War of 1812 (with the lists of awards and casualties appended). The second floor of the gallery was occupied by church choirs.