The Church of the Savior on Spilled Blood (Russian: Церковь Спаса на Крови, Tserkovʹ Spasa na Krovi) is one of the main sights of St. Petersburg, Russia. It is also variously called the Church on Spilt Blood (Russian: Церковь на Крови, Tserkov’ na Krovi) and the Cathedral of the Resurrection of Christ (Russian: Собор Воскресения Христова, Sobor Voskreseniya Khristova), its official name.

"The preferred Russian name for this great church is Храм Спаса на Крови (Khram Spasa na Krovi), but each English-language tourist publication seems to list it under a different name. The moniker of "Spilled Blood" is most popular in preference to the likes of the Church of the Resurrection, Church of our Savior on the Blood, Cathedral of the Ascension, Resurrection of the Christ, or Assumption, Church of the Redeemer, or any permutation of the above." This Church was built on the site where Tsar Alexander II was assassinated and was dedicated in his memory.

Construction began in 1883 under Alexander III, as a memorial to his father, Alexander II. Work progressed slowly and was finally completed during the reign of Nicholas II in 1907. Funding was provided by the Imperial family with the support of many private donors.

The Church is prominently situated along the Griboedov Canal. The embankment at that point runs along either side of a canal. On March 13, 1881 (Julian date: March 1), as Tsar Alexander's carriage passed along the embankment, a grenade thrown by an anarchist conspirator exploded. The tsar, shaken but unhurt, got out of the carriage and started to remonstrate with the presumed culprit. A second conspirator took the chance to throw another bomb, killing himself and mortally wounding the tsar. The tsar, bleeding heavily, was taken back to the Winter Palace where he died a few hours later. rchitecturally, the Cathedral differs from St. 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 metres 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 St. 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 roubles 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.

Detail of the richly decorated façade and onion domes