CnC: Final War is a semi-total conversion for Red Alert 2: Yuri's Revenge that retells the Second Great War between Allied forces located mostly in Europe and the massive Soviet Empire, that has expanded well across the eastern continent.
The EuroCoal Radar Facility serves as a hub to allow for players to advance to the next tier of technology, provide auxillary radar functions to bases in addition to those provided by the Construction Yard, and to detect incoming threats in a small radius around the structure itself.
Credit to Orac for the Radar Facility graphic.
Looks like the Radar Dome from Red Alert 1
Beautiful.