This cache is part of the 12-12-12 event

Fotbal Club Progresul Bucharest(previously named Fotbal Club National Bucharest) is a Romanian football club from Bucharest, founded in 1944. The team spent the majority of its history in the top-flight, but in 2009 experienced great financial problems, and was demoted to the fourth-tier league, Liga IV.
This stadium is the place where FC National obtained noticeable results in Romanian Liga I, Romanian Cup and Europa League.
One more interesting fact, their gallery... not many people, yet I think everybody remembers 'Los Platanos', a mariachi band that performed at each of FC National's game.
The stadium is now closed, yet it worth a visit.
Enjoy and find a cache and a hint :)
Good luck!