The One Tower is a residential supertall skyscraper under construction along the Moscow International Business Center on Presnensky District in Moscow. Its height upon completion in 2024 will be 442.8 m with 109 floors. It will be the List of tallest buildings in Moscow, and the List of tallest buildings in Russia and List of tallest buildings in Europe after the Lakhta Center in Saint Petersburg. As a residential building, it will be the tallest in Europe and the List of tallest residential buildings after Central Park Tower in New York City. The One Tower will also be the first building in Europe with List of buildings with 100 floors or more above ground and will have Europe's highest observation deck on the 100th floor.
In February 2020, media reported that according to an updated urban development plan for a land plot, the skyscraper's height is supposed to be 445.33 m, at the same time, the architect of this skyscraper proposed to increase the height of the building to 465 m, what would make this building the tallest in Europe. According to recent media reports the construction cost will be 49 billion rubles (approx. $690 million as of July 2020).