(Palatul Bragadiru)
147-153 Rahovei Street
Bucharest, Romania

MAP:

Dumitru Marinescu Bragadiru began building the Colosseum around 1905. Established as a Cultural Palace, it is one of the most astounding and breathtaking buildings in Bucharest. It stretches on over 0.4ha (almost 1 acre) of land situated in the center of the city, with sweeping gardens and vistas.

Some inside images here.

Learn more about The Colosseum and its founder:
  History of The Colosseum
  History of The Founder - Dumitru Bragadiru

Learn more about The Colosseum and its architecture:
  Architecture Interior
  Architecture Exterior

Dress code: Formal

Raluca... how long can be my prefence song list ? :-)