AECOM. German company Josef Gartner was in charge of the glazing of the skyscraper. Zero cycle works started on 30 October 2012. The main contractor for the construction of Lakhta Center, Rönesans Holding, was selected on 22 April 2014. Construction schedule March 2013 – zero cycle works are in progress. Piles are being installed. According to the schedule of construction a diaphragm wall is to be completed by the end of April while piling works will continue until 15 August 2013. April 2014 – construction of the skyscraper's foundation pit is complete. June 2014 – piling is completed. 264 piles were mounted for the tower of Lakhta Center, 848 piles were mounted for the mixed-use building and entrance arch and 968 piles were mounted for the stylobate (underground parking). All in all 2080 piles were dug in. February and March 2015 – the pouring of the bottom slab of the skyscraper's box shaped foundation is over. 19,624 cubic meters of concrete were cast in the foundation. September 2015 - all works below zero elevation are finished. The construction of the first floors of the tower core is underway. April 2017 - height exceeds 300 meters, making Lakhta Center a supertall building (international classification). May 2017 - the skyscraper reached a height of 327 meters, making it the tallest structure in St. Petersburg. 5 October 2017 - Lakhta center became the tallest building in Europe as it reached a height of 374 meters. 29 January 2018 - the height of the tower is 462 meters and the assembly of the spire structure is complete. Other buildings In addition to the tower, the complex contains multiple other buildings. The multi-functional building (MFZ) consists of two buildings, North and South, which are united by a common foundation, stylobate and roof. The building resembles a boomerang. It has a variable number of storeys with a height difference from 7 to 17 floors, with the peak height being a little more than 80 meters. The structure is approximately 300 meters long. The complex also has a third building, which consists of two separate wings connected by a courtyard. The MFZ contains a planetarium, which has a holding capacity of 140 people. Design Facilities The Lakhta Center contains offices, a co-working center, a sports center, a children's science center, and a conference center. The project includes 1,500 square meters of indoor exhibition space. Part of the