The name should read Oxygen Lounge, but you might as well try Oh-Two when asking for directions. It is located onf the top of Ritz-Carlton hotel, and carries glass ceilings, a swanky bar and has amazing views of the city and some of its landmarks. It is a trendy place, with fashionable ambiences and stylish setting, as are its habitués. They offer mouth-watering cocktails that can be acompanied by Russian caviar, and dishes that go from sushis to international meals. Prices are a bit high in the range, but the whole experience is worth it.