Fisht

Fisht Olympic Stadium is an outdoor stadium in Sochi, Russia. Located in Sochi Olympic Park and named after Mount Fisht, the 40,000-capacity stadium was constructed for the 2014 Winter Olympics and Paralympics, where it served as the venue for their opening and closing ceremonies.

The stadium was originally built as an enclosed facility; it was re-opened in 2016 as an open-air football stadium, to host matches as part of the 2017 FIFA Confederations Cup and 2018 FIFA World Cup when it was known simply as Fisht Stadium.

Source: Wikipedia