Where will be FIFA World Cup 2018 in Saransk?

The Stadiums of Saransk

Saransk has several stadiums, swimming-pools, ski lodges, ice rinks, sport complexes, Olympic training centre, indoor BMX-centre and many others sport objects. Saransk was the host city for many sport events, such as Minor Olympic games of the Volga Federal District, summer Russian biathlon championship, Russian tennis championship among individuals, Russian Greco-Roman wrestling championship for youth, World and European ice speedway championship and others.

Location on map: https://www.google.ru/maps/place/Старт,+Стадион

 The stadium "Start":

But It has been begun the construction activities of new stadium for 45 000 seats especially for the FIFA World Cup 2018.  After the FIFA World Cup part of the stands, which consist of of prefabricated structures, will be dismantled . After this constant capacity will be 25 000 seats . According to preliminary plans, the shape and color of the new arena will resemble the red sun depicted on the flag of Mordovia. 

In 2010, the area near Volgograd street and the  river "Insar" was cleaned to a construction. It was  planned to finish the building of the stadium to 2012. Subsequently stadium opening was postponed for 2014-2015 . Besides the main arena is projected creation of the sports complex, which includes sport halls for basketball and volleyball, allowing to hold  world-class competitions (information from wikipedia). 

The picture of future stadium:

And the video of the project: