This skyscrape has not building yet, but in october, the Saint-Petersburg goverment has allowed gasprom to build this skyscrape and to increase it height to 400 meters. According to federal law, the maximum height for the buildings in this area can not be more, then 48 meters.
This building will destroy the "Skyline" of Saint-Petersburg, wich is in UNESCO World Heritage List. http://whc.unesco.org/en/list/540
On the place, where a skyscrape will be build, archaeologists found a ruins of swedish fortresses Landskrona (14'th sentury) and Nienshans (17'th century), but the greatest success of the archaeological expedition was the discovery of the largest set of remains in northwest Russia from the Neolithic era.
There are a little article about archaeological expedition. http://vveshka.livejournal.com/25762.html
And some photo - visual analyse of this skyscrape in Saint-Petersburg's architecture.






P.S. Sorry for mistakes in english :-[