This is a remodeling project of the club stadium of the Bulgarian football team CSKA Sofia to meet Category four of UEFA stadium standards. It mainly includes a new addition of a canopy - visor roof over the existing 22,000 seats. The visor roof can be executed in metal sheathing or lightweight translucent tensioned membranes. The original structure was built in 1923 over dirt berms in the middle of Knyaz Boris' Garden - the central park in Sofia, the capital city of Bulgaria. The last substantial remodel was completed in 1967.