The original Cathedral of Christ the Savior was built over 44 years to celebrate the 1812 victory over Napoleon. It was completed in 1883. Stalin had the church destroyed in 1931, but it was rebuilt using mostly private funds in 1999. The new church is a replica of the original. Note that it took 44 years the first time and only 4 years the second to complete the church! Isn't modern technology impressive.
One interesting tidbit is that it took three attempts to blow up the church in 1931. Stalin planned to build a huge Palace of the Soviets on the cleared land, but engineers determined that the land was too boggy. In the 60 years intervening, the space was used for a variety of things, including a year-round swimming pool!
