Take the subway (metro) to Sofia downtown - Station Serdica. Look for the Metro on the left side, just outside the terminal. It's fast, safe and it cost less than 1€. Подробнее.
This huge Orthodox temple was built during the euphoria after Bulgaria was freed from Turkish control. A century of smoking candles gives its ornate frescoes the semblance of faded medieval survivors Подробнее.
The Statue of Sainf Sofia, a symbol of the Bulgaria's capital city. Подробнее.